2008 North American International Auto Show
General Motors Chairman and CEO Rick Wagoner (R) greets Bill Roe (C) and Vinod Khosla of Coskata, Inc. after announcing a partnership with Coskata to use the company's breakthrough technology that produces ethanol from trash, old tires and other waste, at the 2008 North American International Auto Show in Detroit, Michigan on January 13, 2008 . Coskata's proprietary process will produce ethanol for less than $1-per-gallon. (Photo by John F. Martin for General Motors)
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