I don’t know. It could be because the comparison isn’t favorable, or it could be because it’s very hard (as your parent post states) to generate a valid compari

I don’t know. It could be because the comparison isn’t favorable, or it could be because it’s very hard (as your parent post states) to generate a valid comparison that controls for driver age and skill, driving conditions, and vehicle safety. What I do know is that Tesla have previously published a comparison of the safety of their cars before and after the autopilot feature was made available, and there is a statistically significant improvement of nearly 60%. This study should factor out most of those caveats, since it’s the same cars, same drivers and same roads before and after the feature release. http://bgr.com/2017/01/19/tesla-autopilot-crash-safety-statistics-report-nhtsa/ http://bgr.com/2017/01/19/tesla-autopilot-crash-safety-stati...