I have heard stories relating to MVs being used and abused in film work, where the owner arrived to collect his precious MV only to learn it had been blown up in a sequence. As each film is managed by a Limited Company specifically set up to limit the liability its no good getting them to insure your MV, as the Ltd Co is likely to get dissolved asap once the film is shot, so there isn't going to be anyone on your side to help with a claim. The lesson to be learned is insure the vehicle yourself for the specific film and cover it for all risks!