In Pixar's Cars, the character voiced by Paul Newman is Doc Hudson.
Doc Hudson is Radiator Springs' doctor and a former Piston Cup champion. His reserved personality hides a distinguished racing past, and his experience eventually allows him to guide Lightning McQueen through both technical training and personal change.
Paul Newman was an acclaimed actor and also a serious motorsports participant. He competed in professional racing, including a class victory at the 24 Hours of Daytona and an overall second-place finish at the 24 Hours of Le Mans. That background made his casting particularly fitting for a character shaped by racing. Newman reprised Doc for Cars-related material before his death in 2008; Doc's legacy continues to influence Lightning and Cruz in later stories.