I havent seen one of them in years, Didn't they used to have a sort of motorcycle windshield on the front of them with a single wiper? (i'm sure they did) I remember talking to someone who remembers them coming into service with the RCT in the early 1960's. He said that originally you had an electrically heated suit that plugged in to the cab somewhere. (I think he said that it heated pipes throughout the suit a bit like the old electric blankets). I thought he was winding me up until I saw an old black and white picture of him wearing it, also the socket was still marked on the vehicle conection as well.