Re: "Self driving cars can only only react"
I timed the video and from when the pedestrian appears to when the video stops seems to be closer to 0.75 seconds rather than 2.
Not sure I would have noticed, reacted and braked to a 'safe' speed in that time.
The failure is not in autonomous cars per se, something went wrong here in that the 'extra' senses that the car should have did not operate or were turned off.