Several years ago one morning when I got up I was feeling like Cr***, but had to go to work anyway. My wife was helping me get things together and she took things to the car and turned on the lights in the garage. Well, I never turn them on as when you hit the door opener they come on automatic. In my condition I thought the door was open and got in car and put into reverse and hit the gas. Well, it pushed the whole door out and then it would not open. Only thing to do then was get out of car go out the front door and around the house and kick the hell out of the door to push it back in. It worked and it would then open. Cost me $600 for a new door.