What type of real car is Doc Hudson modeled after in Pixar's Cars?

Doc Hudson is modeled after a 1951 Hudson Hornet in Pixar's Cars.

The Hudson Hornet was a real American automobile produced by Hudson Motor Car Company. The model became famous in stock-car racing during the early 1950s, making it a fitting basis for Doc, the respected former racer who becomes Radiator Springs' physician and judge.

Doc's backstory reveals that he was the Fabulous Hudson Hornet, a three-time Piston Cup champion. After a serious crash ended his racing career, he became disillusioned when the racing world moved on without him.

The character is voiced by Paul Newman, whose own career and later involvement in racing added resonance to Doc's identity. The 1951 Hornet's low profile and distinctive front grille are reflected in Doc Hudson's design.