Where race car Lightning McQueen makes his home in the Cars series. Determining exact location is tricky despite a map being seen in the first movie. The Earth of Cars is one where there are sentient cars but no humans, thus some names get changed. But we know it's not far from California and north of highway 40, along part of route 66 (it appears that in the Cars universe, more of route 66 has survived than in the real world). Given its proximity to a mountain range (see map in the link below, taken from the movie), roughly where Leupp, AZ is seems likely.

https://www.quora.com/Where-does-Cars-1-take-place