You are right peckery that is crazy talk I.E. Ozzie Osbourn, Slayer, Motely Crue, Stones "sympathy for the Devil" Super Tramp lyrics,"the Devil is my saviour" Kid Rock, "THe Devil KNows my name." All of these people have milked it on one level or another and are just to name a few. I think that is what SC was talking about. The guy is a truck driver after all and having been one myself I know that truckers don't just make stuff up.
Probably just a marketing tool but this appearance never the less in vogue for a time and not with out documentation. Certainly not unfounded.