Paul Mulderrig sneaked out of the office for a few days last week for a road trip on Route 66….. Yes, it’s all Billy Connolly’s fault.

The trip included a pilgrimage to Cadillac Ranch in Amarillo, which is shown here and in our headline pic.

For your chance to win a copy of Billy Connolly’s book about his Route 66 trip tell us who wrote the song.

(Get your answers to us before New Year’s Eve!)