 "Hot Rod" was written by Pam Brady, a former "South Park" writer, as a project intended for Will Ferrell during his tenure at "Saturday Night Live".The project never commenced, and the script remained in limbo at Paramount Pictures for several years.In the meantime, The Lonely Island were hired at "SNL" in 2005, and by the end of the year, they had a breakthrough with their short "Lazy Sunday".