Autoparking (parallel) yesterday. Got the "P", stopped, put into reverse, hit the "auto park" button that popped up on the console and let go. The car started backing up normally, then suddenly accelerated (backwards) and ran into the car it was supposed to park in front of. My right rear hit it's left front in a grazing hit. Only body damage, but it will be a few thousand to repair both cars.Seems like not hitting things should be the first priority of autoparkIs there a blind spot off the rear corners? *shrug* It was a strange, and expensive, experience.I reported the incident to customer service, but other than "noting" it and referring me to a body shop, there was nothing they could do.I would hope Tesla would be at least interested in getting my logs in order to examine the circumstances that lead to this failure.