It was slightly different from your average rock song ‘cause it's basically in 6/8 time, which is basically waltz time. It's a great time signature to play in: it rolls, it has a certain unstoppable rolling quality. I made a sort of rough demo of it, and I remember turning around to Brian, “so, what d'you think of that?” He looked at me and said, “you are joking, aren't you?” I said, “no, Brian, I'm deadly serious - it's about a car and somebody who's in love with it.”