Funny, I have had a rental Fusion tell me to take a break too, was in Oregon on some winding roads, guest it though I was swerving...Adaptive cruise on our 2020 Fusion Titanium works great; operates smoothly, keeps appropriate car lengths for speed IMO.
The pre-collision assist system with automatic braking works pretty well also.
I've turned off the lane-keeping assist....If I hit the yellow line too much I am told to pull over and have a cup of coffee!