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Old 08-11-2010, 11:52 PM   #3 (permalink)
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I don't think hydraulic hybrids work all that well for cars. If I understand correctly, they recapture energy efficiently and without the heating & charge/discharge rate issues of electric hybrids, so they shine in the stop-and-go cycle typical of garbage & delivery trucks, but don't have that much energy storage. Most cars aren't used in that kind of driving cycle. The electric hybrid as bridge to PHEV can fairly easily be increased to 30 miles or more of all-electric driving.
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