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Dan @ Apr 15th 2008 7:07PM
Excellent and well-informed post, James.
I still maintain that the only viable and carbon-reducing option is plug-in electric vehicles. Even if all electric cars got their charge from a "dirty" electric grid, our overall carbon footprint could be reduced by by as much as 30% (read on autobloggreen).
I think there are options to increase the efficiency and recyclability of our current cars, while still using gasoline as a car fuel.
The Nissan GTR's twin-turbo engine has incredible volumetric efficiency and as such qualifies as an Ultra Low Emissions Vehicle. HCCI could dramatically increase power yet enable the use of smaller displacement engines. Our car interiors could be made using renewable resources like soy or bamboo. I think all these strategies could be implemented in an exclusive luxury car, without any damage to the marque's signature.
I really wish the next administration sees how environmentally and economically catastrophic the ethanol industry really is and starts putting this country (and hence, others) on the path to clean energy.