A possible winner of the $4 million hydrogen fuel prototype is General Motors Corporation's hydrogen fuel cell powered car called "Sequel" (the prequel is a prototype, get it?).

Taunted as the most sophisticated car ever to roll out of GM's assembly lines, the Sequel is one drivable vehicle that may actually break-in with consumers. According to GM Chairman and Chief Executive Rick Wagoner, the Sequel will up for show next month in California and will have a driving range of 300 miles. How much will one set you back? No idea, GM does not have either. But its surely exciting to imagine getting into one and feeling that hydrogen fuel cell push you forward.

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