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Giz Test Drive: Student-Built Challenge X Fuel-Cell Car in NYC

GM lugged 17 environmentally friendly cars to New York—fittingly, to Tavern on the Green. The rain-soaked occasion was a display of Challenge X contenders, nearly identical 2005 Chevy Equinoxes modded by teams from schools across the US and Canada to be environmentally friendly, fuel efficient and/or low in emissions.… » 5/16/08 12:50pm 5/16/08 12:50pm