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Tuesday, July 3, 2007 12:00 AM

Hip, hip, CAFE!

Some Dems celebrate a new Senate bill to boost gas mileage. But it's premature to toast the end of our high-octane bender.
By Katharine Mieszkowski

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  • Tuesday, July 3, 2007 08:35 PM

    Frictional energy

    >the frictional heating of the brakes is directly equivalent to wasted gasoline.

    You're exactly right about this on normal cars. Hybrids use this energy to recharge the battery--that's why hybrids don't need to be charged conventionally.

    —chickadee Read chickadee's other letters

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