Scott Tucker (second driver from left) at the awards ceremony at the American Le Mans Series in Long Beach, Calif., on April 16, 2011.

Scott Tucker, right, underwrites his Level 5 Motorsports passion with profits from his payday lending businesses. Here, he is shown with drivers Luis Diaz, left, and Christophe Bouchut, center, celebrating with high-quality tequila at the American Le Mans Series' Road Race Showcase in Elkhart Lake, Wis., on Aug. 20, 2011.

From left: Level 5 Motorsports drivers Christophe Bouchut, Scott Tucker and Luis Diaz celebrate with other winners at the American Le Mans Series' Road Race Showcase in Elkhart Lake, Wis., on August 20, 2011.

Scott Tucker's home in Aspen, Colo., recently purchased for $8 million.

Scott Tucker's home in the suburbs of Kansas City. He also has a $8 million vacation home in Colorado. 

A Learjet 60, like Scott Tucker's, that retails for $13 million.

The exterior of Miami Nation Enterprises, which has an online payday lending business that has sovereign status beyond the reach of state regulators. 

Ramon Zayas took out a $250 loan from online lender 500FastCash to make his bills during a bout with prostrate cancer, he said in an interview with CBS News. His loan came with an annual interest rate of 476.09%.