Ok, old timers and highway buffs, maybe you have the answer to this question.
In the scene leading up to the gas station scene, they show the KC Monarchs bus on the road and the caption said it was on an Interstate highway (I think it said I-24). The Interstate highway system was not created until the late 1950's. Was this a mistake? Was it supposed to be U.S Route XX?
This just in from the newswires: The Anti-Trust Division of the US Department of Justice has announced that whenever Sale take The Bump, it is unfair competition in violation of various federal and state laws. However, he is not being prosecuted because it is so ****in awesome to watch him do his craft.