Charlotte

O. Bruton Smith
80

How'd he get so rich? The first man to bring Nascar to Wall Street, the auto-racing billionaire owns Speedway Motorsports, which includes the Charlotte Motor Speedway, Las Vegas Motor Speedway, and Texas Motor Speedway. He is also chairman and CEO of Sonic Automotive, a company with more than 180 car dealerships.

Learn more about Speedway Motorsports (TRK).

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