'Locks repel keys...' When I was young and incredibly stupid, I parked my car on a hill and it was NOT in gear. I got out, and as soon as I closed the door, it began to roll backwards down the hill. I chased it and let me tell you, the lock DID repel the key. I have since believed that this is quite a true phenomena, but remember, the car has to be moving.
BTW-it was rolling straight for another car and right before it hit, it mysteriously swerved and hit a fire hydrant.