NASCAR driver Jimmie Johnson and his wife, Chandra, watch as students J.T. DuBoise,13, right, and Gene Davis, 14, demonstrate their air-driven miniature cars in a laboratory at Emerald Middle School ... more 
NASCAR driver Jimmie Johnson and his wife, Chandra, watch as students J.T. DuBoise,13, right, and Gene Davis, 14, demonstrate their air-driven miniature cars in a laboratory at Emerald Middle School in Johnson's hometown of El Cajon, Calif., Tuesday, Oct. 5, 2010. The laboratory was built with part of the $100,000 Johnson's foundation donated to the school. less 
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Associated Press | Photo By Lenny Ignelzi
Tue, Oct 5, 2010 7:00 PM EDT