I almost always drive with my CC on. Keeps me from going 85 and getting a ticket.
Same here. And my current vehicle has "adaptive cruise control" which will automatically adjust speed down if needed to keep distance from traffic ahead (and will even bring the car to a full stop if needed). Occasionally it will have false vehicle detection and slow down when it shouldn't, but usually it's pretty accurate.
If they catch me and do it again, I do the opposite and hit the brakes sending them flying on by and reset my CC.