Cruise control won't hit the brakes if you are going downhill and exceed your set speed. I think he's looking for the latter. Setting it to 60 is probably too low though unless the OP only ever drives in the city. I'm hoping he's not one of those people who immediately shove their way over to the far left lane of the interstate and never move until they suddenly jump across three lanes of traffic at the last second to take their exit.
Recent cars I've owned with computer-controlled manual (or "manumatic") transmissions (Ford SelectShift/PowerShift, Hyundai Shiftronic, etc.) will change gears and do engine braking to keep it in the right speed. Even in my ancient Honda Accord, throttle control is usually enough to keep it within a few MPH of my chosen speed once going 60mph+ on most highways I tend to drive on.
> Cruise control won't hit the brakes if you are going downhill and exceed your set speed.
On an EV it will. Well, it uses the regenerative braking but I could clearly see the flow of regenerative energy going back to the battery while on cruise control and going down a hill. (This was on a Nissan LEAF.)
Oh, this makes more sense. I do agree that 60 is too low, there are definitely scenarios where you'd want to accelerate above 60 for passing situations.