Bloomberg.com has the following article on Ballard Power (BLDP)

DaimlerChrysler AG and Ford Motor Co. agreed to invest $100 million in Ballard Power Systems Inc., the biggest maker of fuel cells for automobiles, and restructure their alliance with the money-losing company to speed up development of the alternative energy devices. [ full story ]

In the article there is an interesting quote from Ballard's CEO.

"We think we have a line of sight now to a commercial product in the early part of the next decade... There no question that fuel cells will replace piston engines."