Malcolm Rennie recalls “In the (probably early) 1960s, in the Mars Bar TV advert campaign 'A Mars a day helps you work rest and play' the theme was workers doing different jobs. I am sure that one was a bus driver on the London Transport skid pan with a view of one of the rear wheels of the RT trainer bus lifting off the ground before landing back down heavily. This was the first time I had seen the skid pan and I was horrified.”