General Motors Chairman Richard Wagoner and Jeremy Rifkin make strange allies. Wagoner, a captain of industry, and Rifkin, an activist who has predicted that capitalism's best days are far behind it, agree that hydrogen could end up becoming the dominant way of powering vehicles and perhaps the economy.

I still think that the automotive industry will not be the ultimate catalyst for this technology, that it will be the home consumer.

Fuel Cells Starting to Gain Steam