It is a stupid cost cutter. I can reverse a car no problem without a rear wiper. Without sounding condescending if you can’t reverse a car just using wing mirrors then maybe your reversing isn’t as good as you think. Folks I’m not being cheeky saying that. And again different cars different shapes, but the e3008 fairly stayed clean. Also I believe all motability cars have rear parking sensors. Unless that rule has been done away with lately.