There's a great story in Johnny Cash's memoir ... JC and Roger Miller were driving across the desert somewhere like Arizona, on the way to a show (and no ac in those day!), and suddenly, Roger Miller said, "Stop! Man, you gotta stop the car!" Johnny Cash figured he had to (ahem) go, so he pulled over and Roger got out and walked out of sight.
He didn't come back for a while, so Johnny Cash leaned back and dozed off. Roger Miller came back a couple hours later and woke him up, and Johnny asked, "What happened? Did you get lost? Are you sick?" and Roger Miller said, "No, I just had to write a song real quick!"
He'd walked off into the desert and written, "Dang Me"!
Thanks for the story. You know, I really, really need to get Cash's book. I keep saying I will but never get around to it.