The development and use fuel cells is the future that has arrived here and now. A Vancouver-based company, Ballard has successfully made fuel cells into a commercially viable alternative to fossil fuel.
Daimler-Chrysler was the first automaker to jump aboard and invested millions of dollars to insure and secure its place in the future of automaking. Ford was the recent investor of Ballard. (Yep, I hesitated the IPO Ballard '97

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Ballard buses are already on the road in Europe, Canada, some parts in the U.S. Look out for them.