The draw back with the fuel cell cars is no refueling stations. Most of the manufacturers are sharing technology to build the cars. There is a big center in West Sacramento CA for research and development.
I know, but that is what makes the Volt such a great car. Right now it has a gas 1 liter engine on it. Plenty of refueling stations
and everyone else has a plug-in hybrid coming as well... if they keep delaying they will once again not be first to market with something new... btw - I really liked the original Volt concept, the one that is making its way to production is a totally lame looking vehicle...
I think GM is still missing the mark, with Tesla's deal with Toyota they will probably hit the market running with a Toyota looking body.