Amid record-high gas prices, a slumping economy and consumer jitters, U.S. auto sales plummeted in June, but General Motors managed to retain its No. 1 spot ahead of Toyota thanks, in part, to a six-day sale featuring zero-percent financing offers.
President Bush pressed major U.S. automakers Monday to increase production of vehicles capable of running on ethanol and other biofuel blends as part of his proposal to reduce gas use. Robert Dinneen of the Renewable Fuels Association and Energy Tribune's…
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