The Energy of Nations

by Solarevolution September 26, 2013 05:47
An interesting book is being published today. In The Energy of Nations, Jeremy Leggett writes of the growing systemic risk-taking he has witnessed in the energy sector in the last decade and its consequences which will impact all our lives greatly if he is correct.

He also describes a road to recovery. Not everyone will agree with everything in the book, but it is clearly an honest and heartfelt contribution to vital debates. It has been receiving terrific reviews from an interesting variety of people. You can see those, a summary, Chapter One, and links for buying the book here. If you want to buy the book from Amazon, you can do so here, or directly from the publisher here.

If you have time, and generally approve of Jeremy's project, you could help in a number of ways, including use of social media or perhaps writing a review on Amazon, where skeptics well versed in unfair tactics will surely target the book if it enjoys any success.

Intermittency revisited

by Solarevolution March 27, 2013 14:00

A new detailed analysis has been published on the intermittency of renewables, "Household Solar Photovoltaics: Supplier of Marginal Abatement, or Primary Source of Low-Emission Power?"

Here are some observations about this article:

  • Any future scenario involving the continuing indulgence or coddling of fossil fuel interests is delusional. Catastrophic climate change is at the door. Even if our only issue were peak oil, it is already too late for a smooth "transition" or "energy conservation." We are in a state of emergency and it is time to stop kidding ourselves about our plight, especially within the well-informed but small peak oil / EROI / climate change / renewables community. More than ever, the world needs clear, honest, deep understanding. The politicians and the business community will catch on only when we get real ourselves and "tell it like it is."
  • Given the high risk of social disruption due to climate change, the only rational future for nuclear power (including nuclear weaponry) is rapid decommissioning and secure sequestration. The last thing humanity needs is coastal nuclear power plants flooded by sea level rise and on-river nuclear power plants running out of cooling water while marauders are out on the front lawns of the nuclear industry custodians. Others may be in denial about this risk, but we need not indulge their fantasies of a nuclear resurgence. 
  • That leaves us with only one sane course of action: demand destruction combined with renewables. Any challenges to high EROI renewables carry the responsibility to find high EROI solutions. If batteries don't cut the mustard, then forget batteries. If the main challenge is intermittency, then it is time for us to set the bar higher and put qualified intermittency engineers to work. Many serious developers are working on low cost, high capacity, high round-trip efficiency storage. And they aren't wasting their time on batteries. If trees can survive the night (and winter even in Alaska, Canada, Scandinavia and Siberia), then so can humans. 
    • By the way, a good peer reviewed scientific report on the costs and impacts of intermittency can be obtained from the UKERC:
             http://www.ukerc.ac.uk/support/Intermittency
      It explains the important concept of "root mean square error" and debunks a lot of the myths about intermittent generation.
  • Likewise, if we need a smarter grid to make renewables work, then we need to put more smart people to work, and pronto. One can identify the challenge and the inadequacy of efforts to date. Fine. Then what happens? (Robert Heinlein's admonition comes to mind: "Always listen to experts. They will tell you what can't be done and why. Then do it.")   
  • Residential rooftop solar has a place but it carries the challenges of high installation cost, poor orientation/shading, roof penetrations, etc. These issues stand in the way of large scale high EROI deployment. 
  • Better we look elsewhere. Stronger candidates are low profile commercial buildings, parking lots and streets (integrated with grade-separated transportation).
  • Nor does the need for scale necessarily imply huge remote solar farms out in the deserts. That's appropriate if we are up to something out there in the first place, but extensive transmission and environmental costs can be mitigated by integrating most renewables into the urban fabric.
  • Charlie Hall's claim that society's EROI has to be on the order of magnitude of 10 is similarly built upon the premise of many steps between, e.g., the well and the wheel. No wonder he's right. We fly rednecks from Houston to extract oil offshore in Angola, ship it to refineries in Rotterdam, conjure magic potions and send it off to who knows where by truck no less, and then run it through a 15% efficient engine pushing around mostly metal. What a waste! By uniting generation and application (source and sink) within a single physical structure, much of that inefficiency can be readily eliminated and the minimum EROI can get back down to a reasonable number. 
  • There is no significant future for electric cars (and thus V2G). Using the Biblical cliche, it doesn't make sense to put new wine in old wine skins. In the context of peak oil, humanity is poised to eliminate the treacherous bad engineering (misnamed "auto"-mobile / "free"-way) that willy-nilly juxtaposes children, pedestrians and bicyclists (not to mention pets, squirrels and deer) against heavy fast-moving machines on the same terrestrial plane. With grade-separated Solar Skyways, for example, we can reclaim the streets for people-not-machines and meet our energy needs as well. In the process, with a 10X improved solution, we can drastically cut the source-to-sink steps which whittle away at full EROI  / LCA / efficiency considerations.
For any new scientific inquiry, we must question the assumptions which underpin the conclusions reached. If one picks a marginal set of underlying premises, one will get marginal results.

And though one's conclusions may be valid within the present political framework and technology mindset, the science behind EROI and LCA relate first and foremost to physics, not BAU economics or political intransigence. As long as we are considering such scenarios as high residential rooftop solar deployment, it makes sense to also put forth bold scenarios with sound physics, irrespective of the political / industrial challenges we face. In the emerging milieu of severe natural consequences, bold is where the opportunities can be found.  

 

The Physical Cliff

by Solarevolution January 03, 2013 04:20

As Washington continues to deliberate over the fiscal cliff and the much-hyped notion that the US government is sufficiently functional to avert fiscal disaster, America's attention is being diverted from a much more profound cliff-hanger looming on the horizon.

The USA, Saudi Arabia and Russia are competing to see which country can "produce" the most oil. That translates into racing to see which country will reach the bottom of the barrel first. In their frantic race to the bottom, these countries are creating havoc on the ground -- destroying aquifers, watersheds, productive land, forests -- and on the high seas -- even to the point of attempting to drill in the Arctic Ocean where extreme conditions will thwart human arrogance.

Reports of production increases can be seen as just more warnings that the race to the finish is accelerating. Sadly those fossil fuelish players have little to show for a Plan B. 

Reports of profits can be seen as thieves bragging about who got away with the biggest heist. Oil only costs what it takes to steal it from our children's children's children. The notion that "they will come up with something to replace oil" is thoughtless and irresponsible. Tell those guys to be careful: they might stub their toes trying to kick the can down the road that far. The physical cliff may be closer than they think.          

In the decades to come, the fiscal cliff of December 31, 2012 will be remembered as a picnic when it is contrasted to the fall from glory which these great nations will experience as they slide down the physical cliff of rapidly depleting oil / gas / coal. 

The debate about Sandy is heating up even if the planet isn't

by Solarevolution November 02, 2012 17:08
The debate about SuperStorm Sandy is heating up, whether the whole planet is or not. Here's what some have to say:
There is no doubt that warming is occurring but I am unclear that we understand that there is any clear correlation between warming and a bad storm although I understand the arguments for it.  I just don't think it is scientific.

I hear a hard edge in those who stridently assure us that big storms like Sandy are related to climate change.

I hear that too. I suspect fear enters into the picture for a lot of thoughtful people who have the skills and sufficient access to information resources to observe, think and act. Frankly, anyone who is not freaking out is just not paying attention. It's not just happening in New Jersey and New York. My family and friends in Sweden are in the most affected northern climate zone and they are experiencing dramatic weather changes first hand. As we rode through the Cordillera Blanca [White Range], my friends in Peru pointed out the now brown slopes. Glacier National Park had over 100 glaciers, now less than 30, and is predicted to be glacier free within 10 years. You can argue it's because of cattle in feed lots instead of cars, or chopping down the Amazon instead of burning black stones, but anyone who attributes these drastic changes to anything but human activity is delusional. We have adequate science to prove that the climate is way out of whack; how much is getting to be a detail.

I'm not suggesting people become apoplectic, but it is appropriate that we recognize the potentially devastating consequences and weigh our responses accordingly. There are those who have the skills and resources to sound the alarm about climate change. And logically, just as we don't have all the answers about peak oil (etc.), they don't have all the answers about climate change. That's a given. 
If you believe it, fine.  But acknowledge that is a belief and not a fact.
I don't base my actions on fairy tales. I operate by certain principles to avoid such traps:
  • I study issues carefully and read scientific articles, and employ journalism primarily to lead me to valid sources, not to jump to conclusions. I look beyond the sources to the support they receive, and apply Jim Hansen's adage: "It's difficult to get a man to understand something if his salary depends on him not understanding it."
  • I devoted years of my youth to learning the analytic tools I would need to discern fact from fiction. As Winston Churchill allegedly put it, "Not everyone is entitled to an opinion; in order to have an opinion, you have to know something."
  • I apply those tools as things come up; I do the math. I have a well-honed "crap detector" and it comes in mighty handy: I encounter B.S. just about every day.
  • And when in doubt, I apply the precautionary principle. I didn't make this up. It is statutory in the European Union.

There are ways to get to the heart of the matter. 

you may be right but you don't know.
If we are in doubt about climate change, then under the precautionary principle, it is our responsibility to err on the side of caution, in this case to jettison our addition to burning stones at all costs, just in case the IPCC is right. If they are wrong, no harm can come of it. In fact, the consequence will be on the upside: a little more oil will be spared for our children. It is our moral obligation to do so anyway. If in the process we mitigate climate change, even a little, so much the better. They will thank us for holding to our principles in the face of ridicule or worse. 

And of course there's the argument that things are going to get very much worse as humanity crashes into peak oil, even if the climate tames down completely. There will be die off (thank you, Jay Hanson). There will be climate refugees. Do we therefore turn cynical? Do we sit on our hands?

My hat is off to those who are designing and building artifacts for a world beyond oil. They may be using oil / gas / coal to do so; they need not be apologetic about that. There is so much to do that they can go where they are welcomed, not where they face cynicism or worse. With success, there will be little post-carbon pockets of sanity, which with a little luck will propagate. No, they won't reach everywhere before things go really bad. It's like building life boats. Better than going down with the ship of fools on fuels.

Windmills Overload East Europe's Grid, Risking Blackout

by Solarevolution October 26, 2012 04:12

Windmills Overload East Europe’s Grid, Risking Blackout

Germany is dumping electricity on its unwilling neighbors and by wintertime the feud should come to a head.

Central and Eastern European countries are moving to disconnect their power lines from Germany’s during the windiest days. That’s when they get flooded with energy, echoing struggles seen from China to Texas over accommodating the world’s 200,000 windmills.

Renewable energy around the world is causing problems because unlike oil it can’t be stored, so when generated it must be consumed or risk causing a grid collapse. At times, the glut can be so great that utilities pay consumers to take the power and get rid of it.

Oh that we might have Germany's problem :: too much electricity.

An acquaintance of mine has been developing an electricity storage technology which can scale and has a low environmental footprint. I called him last month to find out how things are going.

I had thought he was going to tell me about progress on a megawatt-hour prototype. No, he's talking to, you guessed it, the Germans, and they're asking him to design for them a Gigawatt-hour system. Meanwhile, his American prospects haven't materialized.

The Germans will meet the renewable energy challenge. They will be selling American storage technology to electricity grid operators around the world. (Renewables aren't the only context for grid-scale storage.) 

Meanwhile the dominant energy storage technology comes straight from the stone age: digging up black rocks and burning them. But how long will this last? Hmmm... 

Chinese saying: There are two kinds of businessman, good and bad. Good businessman selling; bad businessman buying.

It's a Beautiful World

by Solarevolution July 12, 2012 17:42
How do we communicate the message of peak oil to the curious, the uninformed, the skeptic?
 
Well, that depends upon the message. Is ours a message of fear? Is it fantasy? Is it a message of hope? Is it a call to action?

Here's an option to consider: Lamentations begone!

Way back then

My seventh grade teacher would habitually give us her backhanded praise, "Light dawns upon darkness," as we went through our lessons. In Sunday School I had learned the difference between truth and lies (not to be confused with fact and fiction).

I learned another important lesson in the Boy Scouts. We were taught to leave the campground better than we found it. It meant a little extra work to pick up after ourselves ... and the unconscious souls who had been there before us, leaving a big mess in their wake.

Fast forward...

Fast forward a half century. Without a doubt I now live in a world that is a lot more complex than the campgrounds of my youth. Leaving a better world for the next batch of campers isn't quite as easy as it once seemed. My Scoutmaster would be arrested today if he were driving to Yosemite with 30 kids in the back of that stake-side truck. Nor had I noticed at the time that the truck's exhaust was causing the climate to change, nor that the global fuel tank gauge was dropping fast.

Where do we stand now?

So here I sit today, hanging out with a bunch of savvy folks, imagining a world beyond oil. It's a little scary at times.

Some of the savvy folks are imagining a dystopia. It's hard to fault them for that. All you have to do is look out your window at the world, and you will readily see lots of things falling right apart. Some places are flooding worse than ever; other places are burning, with record highs. Low down depression lurks behind many a paycheck... and it attacks mercilessly where once there was plenty.

More than a million people die in traffic accidents every year; ten million and more are seriously injured. Turf wars (over oil and minerals for cars) add to the numbers and the suffering. In simple terms, the so-called autonomous vehicle ("automobile") has degenerated into a very bad design. Clearly Karl Benz and Henry Ford had the best of intentions, and their inventions served humanity well for a century. But just as the car rolled the horse off the streets a century ago, so must the car be driven out of town in this new century... or pushed all the way to the junk yard when it runs out of fuel. Keeping the same form (an artifact of the oil age) while switching from fuel to electricity might be likened to changing the horse's feed from hay to kerosene so it might run faster. What's wrong with this picture?!

Transferring the American dream to China and Indian is about to turn into a nightmare as both countries compete to see which can gobble up, one-time-only, more natural resources than the other. And they think it's only fair for us to sit on the sidelines to watch them go at it. We have our troubles; these countries will be unfettered to mimic us and chase after their own troubles.

Archeologists have uncovered enough of the past to realize that humans evolved to form a primitive society known as the Stone Age. That hasn't changed very much, realistically. Future archeologists no doubt will call ours the Burn Stone Age.

This race to the bottom is getting pretty insane. Is there any way out?

A Better World

At a recent talk in San Francisco, John Reed, Chairman of the MIT Corporation, former Chair of CitiGroup and the New York Stock Exchange, was asked, "There are a number of young alumni here ... [asking] ... how can they be successful in their careers?"

John Reed replied, "I always could dream. I had a sense of where we wanted to go. And I greatly believed that if you can interpolate it is much better than extrapolating.

"Most managers sorta say, 'Where are we today?' Then they sort of extrapolate, and say, 'We could be a little more efficient; we could gain a little market share; we could do a little this; we could do a little that.' And they spend their life trying to extrapolate from some core to, you know, being somewhat better.

"... I think you gotta have a vision of where you'd like to be and then you've gotta say, 'I'm gonna use my efforts to get from here to there.'

And I must say it served me well in my business career. I think it served the institutions I was working with well and if I had any recommendations for a younger person, it would be, "Dream enough, be realistic, figure out what it is you would love to be, and then figure out how you're gonna get there. Don't just try..."


To leave a brighter world for our descendants, we must begin envisioning a better way to live. We can't dwell incessantly on what a miserable mess we are leaving for them. That's self-indulgence, at a time when we need all hands on deck. A persistent example is to see so many wringing their hands about the intermittency of renewables. This is a bit like complaining that there weren't enough oars on the Titanic's lifeboats.

Since it will be a world without oil (coal, gas), we must envision that: a world beyond oil (coal, gas). What might that world look like? As John Reed said, let's create a vision of where we'd like to be and then let's interpolate -- figure out how to get there. Dwelling on the past and extending that model into the future (extrapolating) isn't going to get us very far. We might consider our accomplishments or lack thereof in light of our core message.

At the dawn of the World Wide Web in 1994, I staked a claim to my vision of a better world -- www.Ecotopia.com -- building upon Ernest Callenbach's vision of an ecologically sound utopia. Once we abandon the unwieldy and outmoded artifacts of the fossil fuel era, I envision a world that is comfortably powered by solar energy. I envision a world where expectations have changed such that we have learned to do more with less in order to meet the needs of all people, accepting the challenge to find ways to stretch natural resources ten-fold, and to stop burning rocks like tenants burning the landlord's picket fence to stay warm through the cold winter. Let the sun shine in!!

If we as peak oil aware folks want to gain market share, we will envision a better future.

[And I reiterate my challenge. I'm all ears to hear about any alternative to my vision which is constructive, plausible and durable. No "over unity" schemes in defiance of the Second Law. No fair kicking the can down the road. Belly to the bar.]


A vision without a task is a dream; a task without a vision is drudgery; a vision with a task is the hope of the world. (Inscribed on the wall of a church in Sussex, England, circa 1730, posted at http://www.ecotopia.com/ecosystems/mission.htm )

Burning rocks to get around

by Solarevolution June 25, 2012 04:27
Listen up!    
Unprecedented economic expansion over the past century has been powered by abundant and relatively inexpensive oil and other fossil fuels.  How would the U.S. and global economy respond to an oil supply crisis and the prospect of diminishing oil supplies?  What would economic “growth” and “development” look like in a future with less oil?

 I think this might be the time for me to highlight the theme of equity (in particular, international- and inter-generational equity).

That statement, "... in a future with less oil," is hinting in the direction of "oil continues to be treated as a fuel." Hmmm. If there is no awareness of the value of oil, not for burning up one-time-only, but as a substance for long term use by our progeny, what right do we have to tie up people's time talking about an economy? What is an economy without leaving behind some resources for a next generation to take over?

Where do we weave this fundamental into the peak oil story? I for one am coming to loath the continuing using the term "fossil fuels." We are burning stones to get around?! How do you explain that to your grandchildren? We are so shortsighted to consume these resources that belong to their future.

I'm probably going to drive to town soon, and jump in an airplane before the year is up. Shame on me. The point though is to put our heads together, to find common ground, so that collectively,  we can put a new spin on oil, to begin to treat it as a valuable resource, too precious to burn. Might that perspective serve well to transform our efforts into a more noble cause?

Today we look back in disgust at whaling for lamp oil. How primitive to kill those magnificent sentient leviathans just to light up a room. What will the beyond-oil people of the future think of us?!

Transportation 100 Percent Solar Powered?

by Solarevolution June 09, 2012 06:14
At this critical juncture in history, many factors must be considered in developing new transportation infrastructure. Going up blind alleys will be very costly; every day matters in the oil depletion count-down. The electric passenger car is one of those blind alleys, for many reasons. It's time to get a 21st century transportation system off the ground. Consider this thought experiment, Solar Skyways:
  • Cost of fleet maintenance: To maintain the global fleet of nearly 1 b vehicles including trucks, fuel at $5/gallon ($210/barrel, net after refining), wild guesstimate of 10,000 miles/year/vehicle [USA is 12,000] at 25 mpg, that's 10 T VMT (vehicle miles traveled; USA has 3 T VMT) = $2 T/year. Or, 30 B barrels at $100 * 60% [IEA] used for transport = $2 T. So, ignoring all other private vehicle maintenance costs, by eliminating fuel altogether for ground vehicles we have a budget of arguably $2T/year to offset new capital costs. Can we do better than that? If we were to transition to renewables in 10 years, we could invest $2T * 10 = $20 T in renewables infrastructure. After that, energy costs (maintaining solar systems) would be a tiny fraction of what it is today. No wars over oil, for one thing.
  • How much will Solar cost? Solar PV 4 meters wide yields 1 megawatt per mile. Placed over major roads (say 4 million miles worldwide, roughly 20-30%), we achieve 4 TW electric. Can we build 4 TW of solar for under $20 T? Prices are now <$3/watt installed at MW scale. That leaves money on the table to cover much of the cost of the Skyways' construction too.
  • How many vehicle-miles will solar deliver? Average worldwide solar capacity factor is 5 kWh/kW/day, so 4 TW * 5 * 365 = 7,000 TWh. Suspended robotic electric vehicles weighing 1/4 tonne will use < 200 Wh/mi, so we can achieve 7,000 T / 200 = 35 T VMT. (Recall USA has 3 T VMT; global is on the order of 10 T VMT. Projected global travel in 2050 is less than 35 T VMT.) It appears that we will have surplus electricity by 2X to share with the folks living along the street. Or we can have the solar panels 2 meters wide.
  • Load-matching: EVs charged at night for use in the daytime is a grotesque mismatch between source and sink (engineer-speak, or "supply and demand" to the economists) which would require mountains of batteries (and mountains conquered by huge mining trucks). Solar energy, on the other hand, occurs at the same time people do most of their traveling.
    Even in winter with less sun, people travel less anyway.
  • Won't we still need storage? Yes. Using the grid for storage will be far less costly than batteries. And if deep storage isn't ready for prime time yet, in the meantime maybe you get charged more for travel at night or on cloudy days in the wintertime. Beats having somebody blow up the Middle East in a huff!
  • Single use vs multiple use: If "Detroit" manufactures a car for private use, the cost is $20,000 per driver / 2 passengers per vehicle = $10,000/pax. If we manufacture an ultralight vehicle at $10,000 that is used in public infrastructure 10X per day, 2 pax, that cost will be $500/pax. If you and I go into competition with "Detroit" in these challenging economic times, who will win more customers?
  • Safety: The automobile has been considered an improvement on the quality of life. Tell that to the families and friends of the million people who die in traffic accidents every year. What about the tens of millions seriously injured? By getting urban vehicles off the ground, the land is freed for pedestrians and bicyclists who no longer have to fear for their lives.
  • Performance: When shared by five modes (trolleys, buses, cars, bikes, pedestrians) the existing public transportation infrastructure (a.k.a. streets) cannot perform well for any one mode. Cars get congested, trolleys slow to a crawl to avoid running over pedestrians, bicyclists and pedestrians meet walls of traffic. Put all vehicles above the human realm (gravity matters, after all) and everybody gets where they want to go painlessly and rapidly.
  • What might it look like?
    Uppsala Solar Podcar
  • Visual intrusion? Fair enough. You might ask Eddie Murphy (Bowfinger) how he feels about that!

Going nuclear-free, Germany smashes solar power world record

by Solarevolution June 02, 2012 03:39
Going nuclear-free: Germany smashes solar power world record.
Germany’s solar power plants produced a record 22 gigawatts of energy on Friday, equivalent to the output of 20 nuclear plants. The country is already a world-leader in solar power and hopes to be free of nuclear energy by 2022.

The director of the Institute of the Renewable Energy Industry (IWR) in Muenster, northeast Germany, said the solar power delivered to the national grid on Saturday met 50 per cent of the nation’s energy quota.

I am surprised that so little attention has been given to Russia, the progenitor of Germany's renewable energy policy.

I hired a German engineering intern in the summer of 1996. He had grown up in East Germany, and in his early teens the Berlin Wall fell. He was old enough at the time to have a very clear impression of Soviet incompetence and malevolence.

To this day Europe's largest imports of fossil fuels come from Russia. So it was no surprise to me that the German Bundestag determined to take their energy policy into their own hands over 10 years ago. You think the sun and the wind are capricious? What if a certain Mr. Putin gets up on the wrong side of bed tomorrow morning?

We are at a turning point. Thanks to the intelligence and courage of King Hubbert, Dennis Meadows, Colin Campbell, Jean Laherrere and others, humanity now understands that fossil fuels and nuclear power are finite. Every penny spent on expanding their use is plainly "good money after bad." Hunting down new "sources" of oil in the arctic or yellowcake in the outback is just that: hunting and gathering in the age of agriculture.

Once again humanity must learn to harvest energy rather than exhaust a patch of land and then move on.

So you say solar power (sun/wind/hydro/...) is intermittent. No argument. There are two ways to deal with that: wring your hands or roll up your sleeves.

Thankfully the Germans have set an example for the rest of us by rolling up their sleeves.

Tags:

Are fossil fuels superior to renewables?

by Solarevolution February 15, 2012 00:46
I read this on The Oil Drum.
"... fossil fuels are qualitatively superior on the matrix categories..."
It all depends on what qualities one cherishes. I cherish clean, quiet, powerful. My matrix I suppose would differ from the Oil Drum author's. In fact, I set forth such a matrix years ago: Scoreboard.

One day, the notion of burning fuels to move things will seem as primitive as cooking a meal in Manhattan at a campfire on the floor in the kitchen. Yes, fossil fuels are compact, but not as compact as electricity delivered by wire. Fuels are explosive too, whether fossil or bio, and it is absurd to have these dangerous substances held in conveyances being hurdled along at highway speed. Now please don't be confused; I'm not advocating EVs with batteries – yet another primitive notion for the urban landscape.

Teams around the world are designing transportation systems based on solar energy, with PV panels directly overhead to meet 100% of the systems' energy demand (on average, net-metered). Teams are designing these systems to place small, on-demand vehicles above the street, where they won't run into people, pets or deer. This is not a pipe dream

"... and that transportation without fossil fuels will be hard..."

Maybe that's true in the USA, but not in Europe. Really, how hard can it get?! When was the last time you looked at a freeway cloverleaf? That's what's hard: accommodating a free-wheelin' half-drunk cowboy in a 3-ton behemoth with a wide margin for error – 12' per lane?! – plus a shoulder or barricade. Tons of steel and concrete can be eliminated by greatly streamlining the urban transit system using this emerging technology, with 200 kg podcars on switched computerized networks above the streets. One day we will be jackhammering the streets to turn them into parks where kids can play again, in their village, without getting run over by the above-mentioned cowboy or a choo-choo train cleaving the community in half.

We can do better. Come on, it's time to roll up our sleeves and stop kicking the can down the road for our children's children to figure out what to do. It is obvious: the age of fossil fuels is moribund, and it's time we stopped killing over a million people a year (globally in traffic) with a transport system design that's completely out of step with peak oil realities – and the reality of 21st century technology that is 10X better in so many dimensions: 10X less weight, 10X less energy, 10X greater safety.

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