In this Jan. 14, 2008 file photo, Republican presidential hopeful, Sen. John McCain, R-Ariz., left, talks to Chrysler Chairman and CEO Bob Nardelli as he tours at the North American International Auto Show in Detroit. With thousands of auto workers in Rust Belt states, Democrat Barack Obama and Republican John McCain offer plans to develop advanced vehicles key to rebuilding U.S. automakers.
In this June 16, 2008 file photo, Democratic presidential candidate Sen. Barack Obama, D-Ill., shakes hands with workers at the GM Flint Engine South plant in Flint, Mich. With thousands of auto workers in Rust Belt states, Democrat Barack Obama and Republican John McCain offer plans to deve[...]