But they just delivered "Smart Summon" feature where the car drives itself to you in a parking lot. The rollout of this feature has been glitchy. But it gives them a lot of data which they will learn from and improve. Once they fix all the bugs in Smart Summon they will have made a major step forward. Self-driving safely in a parking lot is very hard--there may be kids walking about randomly, other cars moving in unpredictable ways, and so on. In fact, my guess is that self-driving in a parking lot is harder than self-driving in city streets, because there are more rules, more room and more predictability in city streets.

I wouldn't be surprised if Tesla delivers city-street self-driving in a year or two.