[cinFLA]

One thing we should also remember - one thing that helped the long post-World War II boom was cheap fuel. With the advent of a hydrogen based economy, cheap energy will be back in style. And this time the Arabs won't have a monopoly on it.

Where are you proposing to get this "Cheap" H2? It does not grow on trees!

[WileyC]

Where are you proposing to get this "Cheap" H2? It does not grow on trees!

Maybe not, but there is a researcher who has convinced a microscopic organism (algae, I think?) to produce H2. If his research pans out, then all you need is nutrients (probably from the effluvia of any city) and sunlight.