John is a legendary crew chief, having extensive team experience in both the Piston Cup and the American Grand Touring Sports racing classes. Known for a cool head under stress, decisive leadership, and the ability to get the job done, John has that golden clutch. All these skills led to his being paired with his longtime friend in racing, Jeff Gorvette. Now the winning pair is gearing up to take it all at the World Grand Prix.
At the end of Cars 2, is seen a truck of the same model of John Lassetire, with the hat and the surf table. Surely, this truck is John Lassetire because there's a die-cast model of John Lassetire that is the same of the truck at the end of Cars 2.
- He is named after John Lasseter, and is voiced by him.