Photos: 2015 Indianapolis 500 Pre-Race

IndyCar driver introductions and other sightings (Dave Letterman!) before the 2015 Indianapolis 500 at the Indianapolis Motor Speedway.
IndyCar drivers present and past gathered at the Indianapolis Motor Speedway for introductions ahead of the 2015 Indianapolis 500, as well as celebrities (Dave Letterman, Adam Carolla) and performers (Jordin Sparks, Straight No Chaser).