Because Tesla is NOT Waymo. With LIDAR on top, Waymo can detect 360 all around over 2 football fields away.
Current Tesla can only detect adjacent lanes and front and back.
The speeding car was not in an adjacent lane, so it cannot be Tesla automatic system that did the braking prior to the arrival to an adjacent lane.
The speeding car was not in front nor back, so it cannot be Tesla automatic system that did the braking to the prior to the arrival to the front.
After the braking, then the speeding car came into view to the front of the Model 3.
If it was Tesla automation credit, you would hear it from Tesla's public relations department via blog, twitter...
The B pillar cameras would see the errant car easily. How good is the side collisions avoidance system?
Those who have tried to accelerate only to get the 'object ahead' warning would disagree with you.Autopilot is just like the good old fashion airline autopilot. Human can override automation at any time and very easily.
That also meant that there would be very loud crashing noises and tire noises on the road that made the Model 3 driver applied the brakes well in advance.
The noise aspect is interesting, but given the sub second timing of the entire event (not well in advance) and when the impact occured, I would be very impressed at the driver reflexes esp since the car approached from behind them (intersection angle).
The before and after brake frames from the full sized YouTube video.