Indianapolis 500 track hosts vintage car race for the first time . Al Unser Jr. , Buddy Lazier , Parnelli Jones and Bobby Unser . It 's billed as the ` ` largest gathering of racing fans in the U.S. '' The past 20 years have seen many changes at the Indianapolis Motor Speedway . Major league teams ` ` aero kits '' to make car designs more interesting .
Indianapolis 500 track hosts vintage car race for the first time . It 's billed as the ` ` largest gathering of racing fans in the U.S. '' The past 20 years have seen many changes at the Indianapolis Motor Speedway . Major league teams ` ` aero kits '' to make car designs more interesting .