[kube-system]

Yes, for parking obstacles. But their vehicle probably also has radar sensors in the rear corners of the bumper for cross-traffic alert.

[philistine]

My shitty Kia Niro has a UI element that indicates anytime it detects an obstacle in my blind spot. My side mirrors even have a red light that also tells me it detects something. Tesla doesn't do that?!

[kube-system]

Apparently they do it via camera