Back when we had a suby legacy, my dad was leaving a store and got into a legacy using our key and started it up and started to drive away when someone started yelling at him. He stopped and cops came and he had to show him that he had used our key and just mistaken the car for our's. Weird the key would work on both on a newer car, but I guess it happens when they can only change the key pattern so much. I've also used a house key to open a friend's truck when she locked her keys in it.
