Some recent quotes from the USA Today article covering the Waymo self-driving car hailing service:
“"But mostly it just makes me feel safe. One time, the Waymo (vehicle) paused before turning, and I wondered why. Then a car ran the red light and crashed into the median. It saw that car way before I did."”
“But the fact remains that after millions of miles of city driving, another 7 billion miles of virtual testing and countless more tests undertaken at a private faux-city facility in California, Waymo vehicles have yet to cause a major accident. When fender-benders do happen, often it's because human drivers bump into the robot cars.”
Source: https://www.usatoday.com/story/money/2018/10/10/waymo-self-d...
The real issue is that we need more miles driven to really be certain that this safety record will hold. Thwarting this testing will probably endanger more people because the tech will become mainstream whether anyone likes it or not. It would be a lot better if the tech is over-tested than under-tested.