Tony Kanaan, of Brazil, celebrates with winners milk after winning the Indianapolis 500 auto race at the Indianapolis Motor Speedway in Indianapolis, Sunday, May 26, 2013. (AP Photo/Michael Conroy)
Tony Kanaan, of Brazil, celebrates after winning the Indianapolis 500 auto race at the Indianapolis Motor Speedway in Indianapolis, Sunday, May 26, 2013. (AP Photo/Michael Conroy)
Tony Kanaan, of Brazil, drives through the first turn during the Indianapolis 500 auto race at the Indianapolis Motor Speedway in Indianapolis Sunday, May 26, 2013. (AP Photo/Tom Strattman)
IndyCar driver Helio Castroneves, of Brazil, watches from the pit area during practice on the first day of qualifications for the Indianapolis 500 auto race at the Indianapolis Motor Speedway in Indianapolis, Saturday, May 19, 2012. (AP Photo/AJ Mast)
IndyCar driver Tony Kanaan, of Brazil, is shown after he qualified for the Indianapolis 500 auto race at the Indianapolis Motor Speedway in Indianapolis, Saturday, May 19, 2012. (AP Photo/Dave Parker)
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Jimmie Johnson kisses the yard of bricks after winning the Sprint Cup Series race at Indianapolis Motor Speedway as daughter Genevieve Marie, 2, looks on. Johnson also won at the Brickyard in 2006, 2008 and 2009.
Denny Hamlin drives out of the first turn during practice for Sunday's NASCAR Sprint Cup Series auto race at the Indianapolis Motor Speedway in Indianapolis, Saturday, July 28, 2012. Hamlin won the pole for the race. (AP Photo/AJ Mast)
Katie Couric (left) and race-car driver Danica Patrick are interviewed Tuesday at the Indianapolis Motor Speedway after Patrick took Ms. Couric for a ride in a two-seat race car. "I was nervous at first, but I had a lot of fun," Ms. Couric said. (Associated Press)
Takuma Sato, right, of Japan, spins in the first turn under Dario Franchitti, of Scotland, on the final lap of IndyCar's Indianapolis 500 auto race at Indianapolis Motor Speedway in Indianapolis, Sunday, May 27, 2012. (AP Photo/Bill Friel)
Dario Franchitti, of Scotland, leads teammate Scott Dixon, center, of New Zealand, and Takuma Sato, of Japan, into the first turn during IndyCar's Indianapolis 500 auto race at Indianapolis Motor Speedway in Indianapolis, Sunday, May 27, 2012. (AP Photo/AJ Mast)