Which new racer wins the final Florida 500 in Pixar's Cars 3?

Cruz Ramirez wins the final Florida 500 in Pixar's Cars 3.

Cruz is introduced as Lightning McQueen's high-performance trainer at the Rust-eze Racing Center. Although she initially lacks confidence as a racer, she has strong driving ability and a deep knowledge of modern training techniques.

After McQueen realizes that Cruz deserves a chance to compete, she takes his place in the Florida 500. McQueen helps coach her from the pit area, and Cruz uses her own style and determination to defeat Jackson Storm and win the race.

The ending changes the meaning of McQueen's career rather than simply restoring his old status. Cruz becomes a new Rust-eze racer, while McQueen adopts Doc Hudson's classic racing colors and continues as her mentor. The film therefore passes the competitive spotlight to a new generation without removing McQueen from the story.