The character called Sheriff is the law-enforcement officer of Radiator Springs in Pixar’s Cars. He is a black-and-white 1949 Mercury Club Coupe who patrols the town and catches Lightning McQueen speeding through it.
After Lightning accidentally damages Radiator Springs’ road, Sheriff helps bring him before the town’s local authorities. The character is identified primarily by his role rather than by a personal name, which makes “Sheriff” the canonical answer. Michael Wallis provides the character’s voice in the film.
Sheriff also serves as an important link to the town’s older identity. Radiator Springs once prospered along Route 66, but bypassed highways reduced traffic and left the community struggling. His classic police-car design fits the film’s interest in historic American automobiles and roadside culture.