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On the news tonight they punt a car that runs on water as the answer to all our problems. You drive around with a jug of water and everything's cool right? The end of the clip is quite interesting. They say there are no plans to unveil the vehicle at showrooms, or to roll the vehicle out in mass. Why? They don't say. I'll tell you why: the amount of energy the vehicle requires to separate hydrogen and run on it...is well, not close to the sort of equations we get with ordinary petrol.

So it's back to what Kunstler says: we can't run the world's highway systems the way we're running them now with any combination of alternatives. Even so, the media and consumers of media are dumb enough to consider cars running on water a story worth featuring in headline news. It's about as dumb as seeing a hole in the road and expecting to get to the other side. Maybe it happens in the movies that cars fly over gaps, or even horses pulling carriages make the magical leap. In reality there is a force that's quite important to know about. It's called gravity. In energy economics, there's something like gravity: it's called depletion of a limited non-renewable resource. I have a feeling we're going to try to make a jump across the crater in the road anyway.