Associated Press
FILE - In this Thursday, Oct. 27, 2011 file photo, motorist Bob Davis is reflected in his airport shuttle van as he fills up at a natural gas pumping station in College Park, Ga.  Years from now, motorists needing a fill-up might see natural gas pumps sharing space at the neighborhood filling station with ones dispensing gasoline and diesel. (AP Photo/David Goldman, File)

View gallery

500 photos

Economy, business and finance photos

View Comments (0)