U.S. Route 66 most strongly inspired Radiator Springs in Pixar's Cars.
The filmmakers researched Route 66 by traveling along the historic highway and observing its landscapes, roadside attractions, diners, motels, and small communities. These details shaped the design and atmosphere of Radiator Springs.
In the film, Radiator Springs loses its traffic after Interstate 40 bypasses the town. That fictional change echoes the real impact of newer highways on many Route 66 communities, especially after the older route was removed from the United States Highway System in 1985.
Route 66 originally connected Chicago and Santa Monica. It became a major symbol of American travel, migration, and roadside culture, later gaining the nickname “The Mother Road.” Cars uses that history as a backdrop for Lightning McQueen's shift from speed and commercial success toward community and connection.