They very much have beaten Tesla, or does Tesla have a similar approval and infrastructure in place? Will Tesla take liability from you when the car crashes in Autopilot? They won’t, while Mercedes actually will and has that legally backed by the German government.
As the top comment said, it's only in extremely tight circumstances. Tesla Autopilot / FSD beta (the one that you can use if you have >98 safety score) will work anywhere your car can see lane lines and it'll try its best to work in rain/snow or at 1am with limited visibility.
