[m0th87]

But the problem is that it would take decades to go from R&D to a complete infrastructure that supplants the one we have in place for oil. Even now, the only legitimate substitute for gas-powered cars I've seen is Agassi's proposal: http://www.wired.com/cars/futuretransport/magazine/16-09/ff_...

The issues with a hydrogen economy have been detailed in the past on HN: http://news.ycombinator.com/item?id=688909

In a case like this that involves a massive lag time and an insanely complex upgrade procedure, I'd argue that planning ahead is way better than waiting for the onset of a slow-moving disaster. Not to mention we should probably be phasing out oil anyway for all the usual reasons (global warming, pollution, empowering dictatorships, etc.)