Adaptive cruise control almost caused me to get in an accident in the LA area last year. The rental car had it and I didn't know - I had actually never heard of it - and while driving with cruise control on in fairly heavy traffic all of a sudden the car started slowing down. I told my wife something was wrong with the vehicle, and without hitting either the brake or the gas I started easing over into the next lane to the right in preparation for pulling onto the shoulder. As soon as I got into the next lane, the car all of a sudden immediately started accelerating again without me touching the gas. Took me by surprise and scared the hell out of me because I realized I wasn't actually in control of the car. I took the next exit and pulled into a gas station to think about it for a bit. Finally I decided it was something wrong with the cruise control, it wasn't my car, and I'll just not use cruise control for the rest of the trip. And I didn't. For the next three days I stayed away from CC and everything was fine. It wasn't until after we got home the following week that I mentioned it to someone and the told me what it was.
There is no time when I don't want complete control of the vehicle I'm driving. Cruise control, wipers, braking, headlights - I want everything under my control at every instant that I'm behind the wheel. You can keep that adaptive stuff. It isn't adapting to any part of the way I drive.