One interesting thing I noticed about Chinese vehicles is that the expensive sensor arrays are commonly mounted on the roof, presumably safe from small fender benders. Hopefully Western manufacturers will pick up that feature.
Ideally that would be the place to keep them. It'd also help with not having to recalibrate the sensor arrays due to bumps that might not damage anything but which jostle things a bit. I think recalibration essentially requires an expensive visit to the dealer since the software needed to do it is dealer only or extremely expensive for independent mechanics.