What I've seen about self-driving vehicles is that they are supposed to let all human passenger just take a nap during the ride. What you are describing is clo

What I've seen about self-driving vehicles is that they are supposed to let all human passenger just take a nap during the ride. What you are describing is closer to old cruise control where the car would automatically maintain a selected speed. With enough road re-engineering, a self-driving car could essentially follow electronic rails and also get a lot of real time input about traffic jams, detours, slippery roads, new potholes, etc.