It would be nice if there were some "autonomous valet" system where cars could drive into a lot, get an electronic "ticket" at the gate, drive to the disembark location, then autopark in the location on the ticket.
In NYC for stops of a few hours or less it would often be cheaper in gas $ to have the car keep driving, circling the local neighborhood, instead of paying for parking.
Personally, I'm surprised that the "Summon" feature wasn't matched by a corresponding "Banish" feature (go away and park yourself)