Mercedes-Benz says it has achieved Level 3 automation
businessinsider.com
businessinsider.com
Well... it "works" provided: there is no rain, there is no snow, there is no direct sunlight, there is a car within 100 meters to follow, the speed is under 40 miles per hour, the road has a hi-definition map to follow, your eyes are either looking out the front window or at the in-car display, the road doesn't curve sharply, you don't change lanes, etc.
Oh, and if you don't respond to the warning signal within 10 seconds it will stop the car, unlock the doors, and call emergency service. That can't possibly be an issue on a highway.
It is "level 3" in a super-highway traffic jam on an overcast day. I can't imagine how Tesla can hope to compete.