What is striking to me is I haven't seen anyone talking about evasive maneuvers. The car must have been able to see the person, and the road looks empty, why not swerve?
At the absolute bare minimum, hit the brakes and reduce the impact. An attentive human driver would have at least started to hit the brakes. The software should have had plenty of time (I'm estimating a full second) to do something productive.
