I have a hard time believing people use these self parking features regularly. I could find and back into a parking spot in about a 1/4 of the time that it took the car to do it. Its cool to see a car do it itself, but is it practical or necessary, no.
+Andre B. Agreed! at the same time I know people who can not for the life of them parallel park or back in so for those people this would be a lifesaver. for the rest of us more of a cool "look what my car can do" and I'm sure the more comfortable you get with the system the faster you would do it