If by "pretty good" you mean an absolute f'ing nightmare for the other drivers on the road, especially the ones driving behind the Tesla who must be prepared to

If by "pretty good" you mean an absolute f'ing nightmare for the other drivers on the road, especially the ones driving behind the Tesla who must be prepared to react to it slamming on the brakes at random intervals because Autopilot misidentified a shadow on the road. Autopilot is about as good as a teenage driver getting in the car for the second time.