The only (from this vantage point) path forward for the "hydrogen economy" is for hydrogen production from water disociation to be powered by nuclear/steam electrical generation. (By the way, what are we going to do with all that leftover oxygen?) This is the only low pollution, non fossil fuel path available.

I find this to be amusing when trying to see how it would be viewed by the average environmentalist. "O.K. Let me get this straight. In order to power my fourth generation Prius with hydrogen, you have to build a nuclear electrical plant?" Ironic. This will be a huge conundrum, but workable if we really want it.