<<In the 1st quarter, we registered one accident for every 4.68 million miles driven in which drivers had Autopilot engaged. For those driving without Autopilot but with our active safety features, we registered one accident for every 1.99 million miles driven. For those driving without Autopilot and without our active safety features, we registered one accident for every 1.42 million miles driven. By comparison, NHTSA’s most recent data shows that in the United States there is an automobile crash every 479,000 miles.
Total overall miles and crashes were significantly reduced in this quarter.[0]>>
[0] https://www.tesla.com/VehicleSafetyReport#:~:text=Q1%202019,....
Also, personally I would have a complication: would I be satisfied with being safer than average? I don't know if I'm average. I tend to pay attention and never have driven under influence (alcohol or w/e), or when sleepy. So a little better than average would not bring me peace of mind.
I think some kind of situational statistic would be relevant here; maybe they could have some part of the fleet as controls with AP disabled (and offer some kind of reward), then the overall accident rate can be compared better.
My intuition was always that autopilot + human would be safer, and the only thing that made me question that was the soggy toast Tesla provides as "proof".
There would be privacy concerns doing an apples to apples comparison, but people could opt in.