Corrected entry: At the very end of the last race, we see Lightning stop about 4 feet from the finish line when he realizes that The King has crashed. However, there is a long shot of McQueen at the finish line just after Flo says, "What's he waiting for, Doc?" and you can see that McQueen's bumper is just touching the finish line. However, when he decides to see if The King is OK, his bumper is 4 feet from the finish line again.
Corrected entry: Lightening McQueen is portrayed as the first rookie to possibly win the Piston Cup. When he discovers the Piston Cup trophies in Doc Hudson's garage, we see that Doc won the Piston Cup in 1951, 1952 and 1953. Doc Hudson is a 1951 Hudson Hornet, as confirmed by his license plate is 51HHMD. By winning the Piston Cup in 1951 the year he was made, Doc Hudson is actually the first rookie to win the Piston Cup.
Corrected entry: In the final race, Lightning gets hit by Chick and almost loses it in the grass, but he is able to regain his composure and get in front of the King and Chick. He passes them on the grass and that is illegal in NASCAR. If a car passes another by passing the interior line to get around them, that driver is automatically to the back of the pack.
Corrected entry: when lightning McQueen finds DOC's 3 piston cups they all have the years on them, but at the end of the movie when CHICK wins there is no year engraved on the cup.
Corrected entry: In the final race, Chick purposely grinds against Lightning which in turn causes a blow out. In NASCAR you can't deliberately hit someone to get a higher position.