In Pixar's Cars, Richard Petty inspired the voice and personality of The King.
The King is a veteran Piston Cup racer whose vehicle design is based on a Plymouth Superbird. He is presented as an accomplished champion nearing the end of his career and serves as a respected contrast to the ambitious Lightning McQueen and the aggressive Chick Hicks.
Richard Petty, one of NASCAR's most successful drivers, provided The King's voice in the English version. The character's racing number, 43, also reflects Petty's famous number. The film uses these details as an affectionate tribute rather than presenting Petty himself as a human character.
The King also plays an important moral role in the finale. After Chick Hicks causes a crash, McQueen gives up the chance to win immediately so The King can finish his final race with dignity. This decision shows how McQueen's values have changed during the film.