In Pixar's Cars, what fictional county contains Radiator Springs?

Radiator Springs is located in fictional Carburetor County in Pixar's Cars.

The town sits along historic U.S. Route 66 and is portrayed as a once-thriving roadside community bypassed by a newer interstate highway. That setting gives the film its central contrast between older road culture and faster modern travel.

Carburetor County is a fictional place name built around automotive terminology, matching the film’s many mechanical puns. Radiator Springs itself is not a real Arizona municipality, although Pixar artists researched Route 66 communities for visual and cultural inspiration.

The county is easy to confuse with the real locations that inspired the movie. Pixar’s research included towns and landmarks along Route 66, but the Cars story places its characters in an invented community. Sally, Doc Hudson, Mater, and the other residents all identify Radiator Springs as their home.