So a haptic detent making it easy for the driver to sense where the "maintain current speed" position on the pedal is? This position will depend on the current

So a haptic detent making it easy for the driver to sense where the "maintain current speed" position on the pedal is? This position will depend on the current speed and the road incline. The detent will have to move around and the driver will have to then move the pedal into this new position. At that point you have cruise control with extra steps. Unless I'm misunderstanding you?