The 500,000 miles per ordinary car accident is per NHTSA data on accidents per police report. The Autopilot number is 6 million miles per airbag deployment. Brad believes that Autopilot is better than FSD. However, FSD is replacing Autopilot on highways with the latest version in Beta. Nextbigfuture believes that FSD would have to be passing the 6 million miles per airbag accident on highways.