That's a red herring, full self driving is not enabled in any car and drivers are fully aware. I failed to find any more information on this video. The dashboard is not visible, there is no sound, no way to tell if Autopilot was engaged or not, or if the car is even a Tesla.

Also, I believe off-ramp functionality was only added recently with 'navigate on autopilot', if someone tried this without taking over as instructed, well...