Not unless someone hits the rear of your car. the biggest issue is going to be damaging the car. The panels on vehicles are so thin now to shave off weight that when you go to remove them you could end up denting the trunk and you will be damaging you paint!
Not sure what you are using as a toad but could you mount them on the rear package shelf if it is a car? There has to be a way to tie the vehicles lights in to the motor home right?
Don
PS you might want to have the Mod move this to the Dinghy Towing section. You will get more answers there.
