What highway inspired the road and town culture in Pixar's Cars?

U.S. Route 66 inspired the road and town culture in Pixar's Cars.

The historic highway connected Chicago and Santa Monica and became associated with roadside businesses, motels, diners, and long-distance travel across the American Southwest. Those features helped shape Radiator Springs and its surrounding landscape.

Pixar filmmakers researched Route 66 communities during the film's development, including visits to roadside locations and conversations with local residents. The movie uses fictional geography, but its visual language reflects real landmarks and traditions connected with the route.

Route 66 was removed from the United States Highway System in 1985, although historic sections remain important tourist attractions. The Cars franchise helped renew popular interest in several surviving Route 66 towns and businesses.