When Dan Rather was driving the fuel cell van around on TV at 80mph, I became convinced. This technology has suffered over a decade of harsh review, including the "H-Bomb" thingy. Let us hope they got it right, and future scrutiny will of course prove or disprove this.
As for Hydrogen being released into the air, let us not forget it is the single most common element in the universe.
It began the Big Bang, if all the Big Bangers are right, and all elements developed from it. So long as its isotopes aren't being released, I think the science will tell us we're all right. Besides, how much worse for the atmosphere can it be than CO2.
It is funny. You know, I once had to write a paper to EPA explaining how CO2 could be nominated a criteria pollutant under the Clean Air Act. Isn't it funny how much fighting we do about basic chemicals that have been around for ages. [img]graemlins/1ponder.gif[/img]