(Get Your Kicks on) Route 66 is a popular song of rhythm and blues standard, which features in the film Cars. The Cars (soundtrack) features two versions of the song. One is covered by Chuck Berry while the other is covered by John Mayer. Berry's version is heard toward the resolution of the film where Luigi and Guido upgrade Lightning McQueen in order to prepare him for his race in California. Mayer's version is heard during the end credits of the film.