In Pixar’s Cars, the fictional town of Radiator Springs is located on U.S. Route 66.
Route 66 was a major American highway established in 1926, running from Chicago to Santa Monica. It became strongly associated with long-distance travel, roadside businesses, motels, restaurants, and attractions. The route was removed from the United States Highway System in 1985 after newer interstate highways diverted much of its traffic.
Cars uses that history as the foundation for Radiator Springs. The town’s businesses and residents have declined because travelers now bypass the old road. Sally Carrera is especially interested in preserving its history and bringing attention back to the community.
The film’s fictional geography combines features from several real Route 66 locations, particularly in the American Southwest. Radiator Springs is therefore not a real town, but its setting reflects the cultural history of the historic highway.