Bit of a bad look that the video clip showing Smart Summon shows the Tesla driving the wrong direction down a one-way lane... This might be a situation where Tesla Smart Summon works only when Tesla's are still rare. In areas where they are more common, I imagine a traffic jam of confused driverless Teslas trying to move past each other but get stuck in a small lane like the one in the video.
It’s a parking lot, no right way.
edit: the parent comment edited his comment to include "no right way", which I'd like to address: it is very common (at least in every America city I've ever been to) for parking lots to have lanes that are very clearly marked for only one-way travel. These lanes, like the one shown in the video, are typically only wide enough for one car, and if someone is going the wrong way down one, there's a good chance they'll cause a traffic jam if they encounter someone who is going the right way.
Sure, since it's in a parking lot you might not get a ticket from a police officer. But these rules and established traffic flows still exist for a reason, and if Smart Summon disregards them, it has the potential to cause some incredibly inconvenient situations for both the Tesla owner and anyone else involved.