While learning about the history of Route 66 for the 2006 Disney\/Pixar motion picture Cars , John Lasseter met Delgadillo 's brother , Seligman barber and Route 66 expert , Angel Delgadillo , who told him how traffic through the town almost completely went away on the day that nearby Interstate 40 opened . While researching the history of Route 66 for the 2006 Disney\/Pixar motion picture Cars , John Lasseter met Delgadillo 's brother , Seligman barber and Route 66 historian , Angel Delgadillo , who told him how traffic through the town virtually disappeared on the day that nearby Interstate 40 opened .