Emergency responders assists victims of a multiple-vehicle accident on westbound Interstate 40 about 15 miles west of Amarillo, Texas, on Tuesday, Dec. 20, 2011. (AP Photo/The Amarillo Globe News, Michael Schumacher)

Photo by: Michael Schumacher

Emergency responders assists victims of a multiple-vehicle accident on westbound Interstate 40 about 15 miles west of Amarillo, Texas, on Tuesday, Dec. 20, 2011. (AP Photo/The Amarillo Globe News, Michael Schumacher)