Anybody seen the commercials where the spokesperson is talking about the hydrogen test fleet in DC? I only caught a bit of it, and don't know which car company it is. Hydrogen power would be a great boon to the consumer, but the oil companies won't have it. Even if they get a viable, comercially produceable model developed, it will be so ridiculously expensive that only the very wealthy will be able to afford them.

What would really be cool is to see someone come up with a refit kit for existing vehicles that would convert them to hydrogen. This would be a tremendous undertaking, given the vast number of cars on the roads, but it is possible, or at least for a high percentage. State registration records could give you an idea of where to start, get the most common breeds first. I see 3 or 4 basic engines, (replacements for 4, 6 and 8 cylinder gasoline engines) which should be no problem, but it will get really tricky at motor mount, tranmission and throttle linkage connections. Of course, the throttle could be refit with some springs and some sort of electronic gizmo, no actual mechanical connection required.

With some governemnt subsidies, every car on the road could be converted in 20-25 years.