Sponsors of Nascar, the No. 2 sport on U.S. television after professional football, are slamming on the brakes because of the world’s financial crisis.

General Motors Corp., Chrysler Corp., Sears Holdings Corp. and Chevron Corp. will cut or drop sponsorships next season. Dario Franchitti, the 2007 Indianapolis 500 winner was forced out of the stock-car series by a lack of sponsors.