I can't think of a single scenario in which I'd allow my car to drive around a parking lot by itself.... the thought of retrieving my confused Tesla surrounded by irate drivers or finding a pedestrian laid out on the hood demanding my insurance info does not appeal to me.
I could. IF it actually worked. I think we are MANY year away yet from me trusting the car to come pick me up at the door.
I suspect when released it will come with all the warnings including it can not be used in a public place.