When I'm driving my pickup I seem to be a target on the dual carriageway for people who seem to be using adaptive cruise control or something, possibly other stuff like lane assist as well. I not infrequently get people sitting way to close on my tail obviously their attention mostly off the road taking a phone call or eating, etc. with the vehicle far too precisely adjusting to my speed changes to not be a computer in control. Then if I speed up to overtake something instead of smoothly following on as other drivers do they speed up, slow down (or hit a threshold and stop speeding up), speed up, slow down before the driver reacts to the situation.
How anyone is dumb enough to think that a good idea boggles my mind.
Yes and when the one they are following so closely has to slam on the brakes, they rear end them if their own car's brakes arent as potent.