Because teenagers and elderly can go for a trial for vehicular manslaughter. If Waymo drive into opposite traffic and killed someone, who is responsible? CEO of Waymo that knew that this could happen? If this happens multiple times, what is the value of human life? Even if Waymo become a safer driver than human, we need to answer these questions in regulation and common law.

For me, it is insane how many people need to die before anyone hold Tesla accountable for its autopilot [1].

https://en.wikipedia.org/wiki/List_of_Tesla_Autopilot_crashe...