You are working in the woods clearing an area. You place your chainsaw in a spot that you can’t possibly forget about. After about five minutes of loader work you get off the tractor to grab your chainsaw and find that you backed over it.
Despite the fact that the tractor exists to pull things, you will climb into the seat and forget about what you are pulling, damaging the floor/walls/trees or whatever is near by to the thing attached to the rear.