INDY AUTO is a term used to describe a type of automobile racing. The term is derived from the Indianapolis 500, an annual race held at the Indianapolis Motor Speedway in Indiana. The crossword solutions for INDY AUTO are RACER (5 letters), FASTCAR (7 letters), and RACECAR (7 letters). RACER refers to a person who competes in auto racing, FASTCAR is a term used to describe a vehicle that is designed for speed, and RACECAR is a vehicle specifically designed for racing.