In Pixar's Cars 3, Cruz Ramirez becomes the new racer for the Rust-eze team at the Florida 500.
Cruz begins as Lightning McQueen's trainer at the Rust-eze Racing Center. Although she is highly knowledgeable about data and simulation, she has never entered the Piston Cup as a top-level racer. Lightning eventually recognizes her ability and encourages her to take his place in the decisive race.
At the Florida 500, Cruz competes against the younger generation, including Jackson Storm. Her race is not just a change of driver; it completes the film's theme of mentorship, showing Lightning passing opportunity to someone whose talent has been underestimated.
Lightning continues supporting Cruz after the race. Together they establish a new balance between his experience and her future, while the Rust-eze team gains a new racing identity.