Sir Tow MaterKBE, or simply Mater, is a character in the 2006 animated Pixar film Cars and its sequel as well as the spin-off series Cars Toons. He is voiced by Larry the Cable Guy and inspired by a 1951 International Harvester tow truck. Originally portrayed as a sidekick and friend to Lightning McQueen, he had a breakout role in Cars Toons: Mater's Tall Tales and in other media related to Cars.