Norman Yarvin
In any case, I'm with Henry Spencer on this: you're going to want a liquid fuel as the end result. Trying to maintain millions of installations of an exotic technology, one in each car, is just not going to be competitive with maintaining just a few large-scale installations of an exotic technology in centralized liquid-fuel-production facilities. And if you want a liquid fuel as the end result, the optimal chemistry likely won't have molecular hydrogen as an intermediate product (though it might).
Molecular hydrogen, humph. I want a car that runs on atomic hydrogen. A car, and a rocket ship. Atomic hydrogen would be worth the bother of cryogenic storage... John Schilling john.schilling@xxxxxxxxxxxxxx (661) 718-0955