You arguably don't even need full self-driving for that.
A special "autonomous park/return mode", say, capped to 10kph, only following a single preprogrammed route, with a complete lead foot on the brake. Nobody would want to ride in an everyday self-drive that had those restrictions, but it's perfectly acceptable for an empty trip to a central parking structure.
A special "autonomous park/return mode", say, capped to 10kph, only following a single preprogrammed route, with a complete lead foot on the brake. Nobody would want to ride in an everyday self-drive that had those restrictions, but it's perfectly acceptable for an empty trip to a central parking structure.