Slider Petrolski is a character in Cars.
His parents named him Slider after his uncle: famed dirt track racer , who graced the gritty, makeshift tracks of the late forties. Aspiring to his namesake, Slider started racing at an early age. He challenged postal trucks, taxis, delivery vans, and all varieties of unsuspecting pedestrian motorists. He even raced a police car, but only once.
As he was at the Piston Cup he becomes the #74. He's Fans call him The Rockstar. As he was ten year, he has an little band in his garage.