Hydrogen fuel far from ready for prime time

President Bush has pointed to hydrogen technology as the ultimate solution to the nation’s fuel supply problems, but one big question waits to be answered: Where will all the hydrogen come from?

Even if manufacturers can produce affordable hydrogen-powered vehicles that people will want to buy, energy experts say the nation’s petroleum addiction — a key source of carbon emissions contributing to global warming — won’t end until an environmentally sound hydrogen supply and distribution system is at hand.

SF Gate