Kurt Busch, left, talks with teammate Ryan Hunter-Reay during qualifications for the Indianapolis 500 IndyCar auto race at the Indianapolis Motor Speedway in Indianapolis, Sunday, May 18, 2014. (AP Photo/Tom Strattman)
In this May 19, 2014 photo, Kurt Busch stretches before the star of practice for the Indianapolis 500 IndyCar auto race at the Indianapolis Motor Speedway in Indianapolis. Busch will attempt to drive both the Indianapolis 500 and the NASCAR Coca-Cola 600 in Charlotte, NC. on Sunday. (AP Photo/Michael Conroy)
Helio Castroneves, of Brazil, responds to a question during media interview for the Indianapolis 500 IndyCar auto race at the Indianapolis Motor Speedway in Indianapolis, Thursday, May 22, 2014. (AP Photo/Darron Cummings)
Scott Dixon, of New Zealand, responds to a question during a media interview for the Indianapolis 500 IndyCar auto race at the Indianapolis Motor Speedway in Indianapolis, Thursday, May 22, 2014. (AP Photo/Darron Cummings)
Tony Kanaan, of Brazil, responds to a question during a media interview for the Indianapolis 500 IndyCar auto race at the Indianapolis Motor Speedway in Indianapolis, Thursday, May 22, 2014. (AP Photo/Darron Cummings)
Helio Castroneves, of Brazil, listens to music as he waits for his turn to qualify for the Indianapolis 500 IndyCar auto race at the Indianapolis Motor Speedway in Indianapolis, Sunday, May 18, 2014. (AP Photo/Tom Strattman)