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Hydrogen right now is kind of a red herring. BMW's hydrogen 7 series has a 6 liter V12 that makes only 270bhp--the normal gasoline engine is far more poweriful. It seems that hydrogen is more than likely like ethanol--energy density isn't all that great. You have to burn a lot of it to make a lot of power, it seems. And to get the same range as gasoline, you'll take a big power hit.
I think that Dindo may've dropped some hints in that interveiw, but until December, we're all shooting in the dark, but I bet that some here have hit on what Audi will have with the R18.
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