We tried steam cars in the beginning because that is what was SOTA. The Germans tried to do diesel and that was to be bio fuel powered, petro diesel was later. Now that there is some demand, a better battery is being R&D'd.
Quote:
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Now Envia Systems, a start-up based in the East Bay city of Newark, plans to announce Monday that it has achieved a critical milestone: a rechargeable lithium-ion battery with an "energy density" of 400 watt-hours per kilogram, the highest energy density known to be recorded.
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http://www.siliconvalley.com/ci_20051131
Maybe we shouldn't be so quick to dump the idea other than your President supports it.
Carl