I just don't think Tesla's engineering and manufacturing quality is there yet. I'm sorry to say. PD recently published a photo showing that his ultrasonic sensors are held in place behind the bumper with nothing more than zip ties. ZIP TIES! I think you'd be hard pressed to find such a low bar in a German, or even Japanese, car
What/who is PD?
All the bumpers/nosecones I've seen with ultrasonics have clips built into the bumper, just like every other car. (Bodyshop even showed me a bumper when I was researching upgrading my car to parking sensors, it had clips built into the bumper where the sensors snap into.)