For normal (non-adaptive) cruise control there are few situations where the brakes would make sense, but one of those is a steep hill. An easy way to find out w

For normal (non-adaptive) cruise control there are few situations where the brakes would make sense, but one of those is a steep hill. An easy way to find out what happens if you have a decent grade nearby: set a low speed and point yourself down the hill. I commuted over a large grade for some years and all the cars I drove would brake on it. Can't speak for every system ever made, obviously.