According to the leaked report, one of the new headline features is the ability for the Tesla to recognize, and then obey, speed signs. Using an on-board camera, it should be a relatively simple exercise for the Model D to recognize speed signs, and then adjust itself to match. It's not the first cruise control that messes with your speed without you asking — radar-guided cruise control is actually pretty commonplace on higher-end cars these days — but a sign-recognition system that works reliably would be ground-breaking.
Also showing up on the new car is an auto-lane-change feature. Using a system of twelve sensors around the car, the Model D is able to detect surrounding traffic, so that when you press the turn signal (yeah, you know, the stork things covered in dust hidden behind the wheel?), the Tesla can check your blind spot, then change lanes if it's safe to do so.
