Sensored when Drive in and Park in your garage
Set sensors over head of the house garage door and/or ceiling so that you will always park the car in desired place.
Never hit the side mirror on garage and leave space for other car.
The sensor could be a (laser) light and linked to the door opener. If the car is not driven in from the right place and parked in right place the sound warning will be issued.
Reward: No more damaged mirror and parking into my garage in ease.