Many modern cars are equipped with rain sensors that auto adjust the speed and frequency of the wipers, and they seamlessly move from one setting to the other i

Many modern cars are equipped with rain sensors that auto adjust the speed and frequency of the wipers, and they seamlessly move from one setting to the other instead of having distinct steps or settings like wipers of old. I can see why a programmable wiper motor is useful that scenario; send the speed and frequency as arguments and have the motor adjust on the fly.