> Tesla says that its systems will improve in performance over time and that Models 3 and Y that arrive without the ultrasonic sensors will not be capable of pa

> Tesla says that its systems will improve in performance over time and that Models 3 and Y that arrive without the ultrasonic sensors will not be capable of parking assist, autopark, summon, or smart summon. Tesla claims that these functions will be restored once its vision-only system has achieved parity with the old ultrasonic sensors. Why wouldn't they wait until the remaining sensors can perform these functions before eliminating the ultrasonic sensors? Was this a change driven by a supply chain shortage? Or is this a way to further push people toward the more expensive S and X from the 3 and Y (since only the latter are losing the sensors right now)?