The Cap is a very important part of Radiator Springs. It is an amazing rock formation that is behind the courthouse. Radiator Cap Mountain "Pit Stop!" This article is in need of a pit stop so it can be at full speed. You can help Guido by expanding this page. Retrieved from "https://worldofcarsdrivein.fandom.com/wiki/Radiator_Cap?oldid=144826" Categories: Stubs Places and Locations Community content is available under CC-BY-SA unless otherwise noted.