In Pixar’s Cars, Doc Hudson is Radiator Springs’ local judge and a former racing champion.
Doc is revealed to be the Fabulous Hudson Hornet, a celebrated racer who won three Piston Cups in the early 1950s. His racing career ended after a crash and a period in which the racing world moved on without him.
When Lightning McQueen arrives, Doc initially dislikes the young racer’s arrogance and resists helping him. Their relationship gradually changes as McQueen learns humility, while Doc reconnects with the excitement and community of racing.
The character is voiced by Paul Newman, whose own public image as a racing enthusiast added special resonance to the role. Doc Hudson is not the same character as Sheriff or Sarge; he combines civic authority, mechanical knowledge, and an important racing history.