<P> Sir Tow Mater is a rusty tow truck and McQueen's eventual best friend, voiced by comedian Larry the Cable Guy . His design was inspired by a 1951 International Harvester boom truck . He's the main character in Cars 2 and a supporting character in the other films . </P> <P> Sally Carrera is the town's attorney and McQueen's girlfriend . She is voiced by Bonnie Hunt, and modeled after a 2002 Porsche 911 . </P> <P> Doc Hudson Hornet is the town's medical doctor and a local judge, voiced actor Paul Newman in the first film and its video game and Corey Burton in all other related media . He is modeled after a 1951 Hudson Hornet . He did not appear in the second film, as it is implied that Doc died . </P> <P> He won three consecutive Piston Cups in 1951, 1952, and 1953, with Smokey as his crew chief, corresponding to the first three of the real - life Hornet's production years . </P>

Who plays the voice of doc in cars