Sen. Carl Levin, D-MI, speaks during a news conference to kick off the CARS program at the Transportation Department in Washington on July 27, 2009. The program, dubbed "cash for clunkers," is based on a cash incentive for people to trade in older vehicles for new, more fuel efficient models. With him are Rep. John Dingell, D-MI, (L) and Secretary of Transportation Ray LaHood (R). (UPI Photo/Roger L. Wollenberg)