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The Department of Energy is funding research at GM and BMW, along with several partner universities, into a little-known technology called the thermoelectric generator. Internal combustion engines use a grand total of maybe 25-30% of the energy contained in gasoline for actual propulsion. Everything else is wasted running accessories, being consumed by friction and drag, or gets tossed into the wastebasket of exhaust heat loss. A thermoelectric generator takes advantage of the exhaust heat and uses it to make electricity — a delicious excited electron broth you can use for all kinds of recipes. More »
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