>>Depends how you produce it. The way GW(2)B's administration wants to do it, it seems to be using, guess what, oil. On Iceland, they use thermal energy to produce electricity, and then use that to electrolyse water, with oxygen as a byproduct.
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>Cool if you live in Iceland.

Seems to me that's actually an important point. We're not going to solve the fossil fuel problem until we stop looking for a single solution and go after a variety of solutions that work in different situations and locales. The answer for heating homes is probably different than the answer for fueling cars, which may be different than the answer for providing light. And, as you pointed out, the answer for Iceland may be different than the answer for Spain, which may be different than the answer for Canada.

Tamar