If my car could drop me off at the front door and go park on its own, that would be a significant improvement over the status quo. A personal automated valet is

If my car could drop me off at the front door and go park on its own, that would be a significant improvement over the status quo. A personal automated valet is perhaps a little easier than an automated driver that does everything. Low speeds also means stopping or starting on a dime, which would allow it to be more conservative about identifying obstacles than when driving at highway speeds. I don't really understand why nobody aimed for that sort of incremental improvement. Maybe the sensor package is too expensive to use in such a limited fashion?