I recently tried driving in an experimental that’s a few days old without cruise control, because I’ve been trying out different styles of driving. The main problem is acceleration. Most of the time, accelerating from 25 all the way to 60 isn’t really beneficial. I think it might be a lot more popular if the acceleration was on the scale of cruise controlled driving; as in, the time you wait for the car to accelerate is reduced to what it takes to reach 5 mph from 0. Something like 7-8 would probably be better though. I mean, it’s still nice on long drives, but I don’t think it’s very practical in cities. Of course that could be the intent, but still.