Better driver education and higher test standards would save lives too. So would banning alcohol. None of these solutions, including automated cars, will be mandated any time soon. It's not enough to have data, you also have to have societal buy-in.
Interesting that Waymo chooses to compare accident rates with the average driver vs the rideshare drivers their cars replace. The numbers wouldn't look as impressive because rideshare drivers are involved in fewer serious accidents than the average person.
Waymo says it has 170 million miles and I found 2 fatal accidents it was involved in (fault doesn't matter as fault is not included in the other stat either). Looks like the average is about 1.3 fatalities per 100 million miles, and about 1 per 100 million miles for CDLs. This doesn't seem that impressive.
If we want adoption, we would need it be placed in individual vehicles and it should look at removing driver liability. People will use it when they are drunk if it means not going to jail and it's readily available.