[Wonder Warthog]

"If you try to use compressed H2 for transportation, you get gigantic, enormously heavy tanks, and even more limited range."

Go BACK to the literature and learn a bit about the work on new, super-strong composite tanks. You are half right--IF you use gaseous hydrogen for transportation (which is NOT what I said, by the way--I was talking about the hydrogen economy, which involves ALL energy usage--not just transportation.) the tanks DO need to be super-strong.

If there is a luddite, on this thread, you're it. Personally, I have more confidence in the abilities of my fellow scientists and engineers here in the US to solve these problems than you appear to.

[boris]

"Go BACK to the literature and learn a bit about the work on new, super-strong composite tanks."

I work with those tanks on a daily basis. New and 'super-strong' and very, very costly.

So: either very heavy or very expensive. Take your choice. And remember what happened to the X-33 tank.

--Boris