Cruz Ramirez’s main racing number in Pixar’s Cars 3 is 51.
The number connects Cruz to Doc Hudson, whose Fabulous Hudson Hornet also raced as number 51. Cruz begins the story as Lightning McQueen’s trainer, but her own abilities and ambitions become increasingly important as the film develops.
McQueen’s number is 95, a reference to the 1995 release of Pixar’s Toy Story, the studio’s first feature film. Jackson Storm races as number 20, making these numbers useful identifiers among the film’s principal competitors.
Cruz ultimately takes on a larger role in the racing story, reflecting Cars 3’s theme that experience can be passed from one generation to the next. The number 51 therefore works as both a visual callback and a symbol of Doc’s continuing influence.