It's true that Summon is still in beta and owners are responsible if an accident happens. Would someone care to speculate how 2017 AP2 Model X decided to crash into a garage door during a summon. When the owner was in front of the car, the car seemed to detect that and stopped just fine. When the door rolled down below the level of headlights, it some how still crashed into the garage door. Could it be that the door material didn't bounce back ultrasonic signals?