In Pixar's Cars 3, which actor voices Sterling, the owner of Rust-eze Racing?

In Pixar's Cars 3, Nathan Fillion voices Sterling, the owner of Rust-eze Racing.

Sterling purchases the Rust-eze brand and oversees the training program intended to return Lightning McQueen to championship form. He is a polished businessman who sees McQueen's comeback as a valuable commercial project, but he also pressures the veteran racer to accept a predetermined future.

Fillion's performance gives Sterling an upbeat, professional tone that gradually reveals his practical priorities. Sterling is not a racer or a coach in the same sense as McQueen and Cruz Ramirez; he is the executive responsible for the Rust-eze operation.

Cars 3 uses Sterling to frame questions about sponsorship, retirement, and control over an athlete's career. The film's resolution shifts the balance toward McQueen and Cruz, while Sterling remains associated with the business side of racing rather than its personal mentorship.