There are two forms of "summon". There's regular summon, where you have to hold down a button to make the car go forward or back. It does turn to avoid obstacles, but with a very nervous energy. Regular summon is super slow, 1-2 miles per hour. If you let go of the button the car stops, but not as quickly as you'd think. It takes about a full second.

Smart summon does have wild raccoon energy. In this case, you need to be within ~200 feet and the car uses its GPS location to plot a path to you. It will back out and turn around obstacles. But it goes kind of fast. Uncomfortably fast. I had my car whip around a turn and nearly hit a parked car. I don't think I've ever seen it work well. Or at least it has always ended with me letting go of the phone kill switch. Which again, takes around a full second to stop the car.

Like someone else commented, this is a very different system than "full self driving" (16 year-old that just got their license energy), which is also a different thing than "Autopilot" (works great on highways).