Tesla's Autopark feature is nifty, but still too slow to be useful really.
Bjorn Nyland tried out Autopark with his Tesla Model X and concluded that it was a bit scary and very slow. Nyland was also a bit disappointed by the final park job too.
"I tried the automatic parking today. The car went back and forth a few times to park. I would usually park faster and better though. But it's a very nice feature. Especially one day when the cars drive all by itself."
The last part of Nyland's description is what matters really. Someday when cars fully drives themselves, Autopark will be necessary, but for now it's just a novelty really.