In Pixar’s Cars, Doc Hudson is based on the Hudson Hornet, whose model was first introduced in 1951.
The Hudson Hornet was a full-size automobile produced by Hudson Motor Car Company. Its “step-down” design placed the passenger compartment lower within the frame, helping create a low center of gravity and strong handling. Those characteristics contributed to the car’s reputation in early stock-car racing.
The real Hudson Hornet became especially famous in NASCAR. Hudson driver Marshall Teague helped establish its racing image, and the model won numerous races during the early 1950s. Cars transforms that motorsport legacy into Doc Hudson’s fictional biography as the Fabulous Hudson Hornet.
Doc’s three Piston Cup championships in the film are fictional, but the car’s racing reputation is based on real history. The Hudson Hornet continued through later model years, so 1951 identifies the beginning of the model rather than the only year associated with it.