Doc Hudson is a Hudson Hornet, the former racing champion who lives in Radiator Springs in Pixar's Cars.
The character is modeled on the real Hudson Hornet, a car famous for its success in early stock-car racing. In the film, Doc initially hides his racing past and serves as Radiator Springs' respected doctor and judge. His identity becomes important when Lightning discovers that Doc was once a celebrated competitor.
Doc's racing career included three Piston Cup championships, won in 1951, 1952, and 1953. The film connects his character to the real Fabulous Hudson Hornet, a nickname associated with the Hudson brand's racing success.
Doc Hudson is voiced by Paul Newman, whose own connection to motorsport gave the role added resonance. The Hudson Hornet should not be confused with the Chevrolet Corvette or other race-inspired cars in the film.