I beg to differ. https://en.wikipedia.org/wiki/Transportation_safety_in_the_U...:
”Comparing motorways (controlled-access, divided highways) […] the United States had 3.38 road fatalities per 1 billion vehicle-km on its Interstate-type highways, often called freeways”
I think that number better reflects where Tesla’s autopilot is used. Also, if you remove motorcycle deaths from that number, I can’t see how the Tesla could be significantly safer, let alone four times less deadly.
I think you should also correct for vehicle age (older cars and lighter cars are less safe). You could (and, IMO, should) also correct for vehicle size/price, as Tesla drivers won’t be interested in whether their car is safer than other cars on the road, but in whether it is safer than what they could have bought instead.
And of course, there’s the elephant in the room. I expect that Tesla drivers prevented at least half the deadly accidents that would have occurred if Autopilot did all the highway driving.