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ehh.. but we can, technically, keep using combustion engines forever. A diesel engine will burn nearly anything liquid and flammable, and there are several fuels that can be synthesized with acceptable efficiency, so as long as the world can produce electricity, then combustion engines are an option. Now, economically, electric engines and batteries are quite likely to be about 3-4 times cheaper, but for applications where energy density is sufficiently important, "3-4 times more costly fuel than electricity" is still quite cheap.
by Thomas on Fri Jul 30th, 2010 at 12:35:24 AM EST
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