The cops in Arizona have Chicago flags on their uniforms.
The end credits list a song by Faster Pussycat called "Number Off the Bathroom Wall" composed by "Taime Molvik." The song is actually just entitled "Bathroom Wall," and the composer's name should either be "Taime Downe" (his stage name) or "Gustave Molvik" (his birth name).
While walking in Peckerville the supposed abandoned town, you can see the cameraman walking with the cast in the reflections of the windows.