It really works. I have been backing in for years so I can always do it better and faster than the system, but it’s a helluva party trick when others are in the vehicle. And I could see it’d be nice if you were unaccustomed to backing into a spot. Be warned though, it will get you REEEALY close to the cars on either side when making the turn into the spot.
What I can’t do is parallel park, and it also does that really well. It’s been nice on several occasions as I have historically had to pass those spots up as I’m trash at paralleling.
I find it’s like the massaging seats...I wouldn’t pay extra just for that particular feature, but I do occasionally use it and it’s nice when I do.