Few people are privy to the secret fear that Johnny Cash had of trains. Faced with a Silver Express redeye as the only way to reach a show venue in Kansas City the next day, Johnny had to find a doctor who would agree to travel with him and his entourage, and administer sedatives until they reached their destination.
Ironically, he wrote "Folsom Prison Blues" directly after that train ride.
(of course, this is all a lot of horseshit that I made up -- please don't let this end up as an addendum to online biographies of The Man In Black)
Borrowed From Ffffound