[johndu]

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.