General Motors Vice Chairman Bob Lutz (left) arrives in the Cadillac Converj electric luxury coupe concept – making its world debut – at the North American International Auto Show in Detroit, Michigan Sunday, January 11, 2009. The four-passenger vehicle will provide up to 40 miles of gas-and-emissions-free electric driving with extended-range capability of hundreds of miles. (Photo by John F. Martin for General Motors) (United States)