In Pixar's Cars, Lightning McQueen is painted with the racing number 95.
The number appears prominently on McQueen's doors, roof, and other body panels. It helps identify him during the Piston Cup races and became one of the character's most recognizable visual features.
The number is a reference to 1995, the year Pixar released Toy Story, its first feature film. Pixar has reused 95 in other productions and promotional designs, so it is more than an arbitrary racing number.
McQueen's number is sometimes confused with numbers associated with other Cars characters. The blue veteran racer The King is number 43, while Chick Hicks is number 86. Those numbers belong to different Piston Cup competitors.