Nothing better than A/B testing within the same population, right? > In the 4th quarter, we registered one accident for every 3.45 million miles driven in whic

Nothing better than A/B testing within the same population, right? > In the 4th quarter, we registered one accident for every 3.45 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 2.05 million miles driven. For those driving without Autopilot and without our active safety features, we registered one accident for every 1.27 million miles driven. Even if you assume most accidents happen in that last group, city driving with AP off, that ratio (3.45:1.27) is better than the overall estimated proportion of city vs highway accidents for all vehicles, at 2.3:1. At a minimum, AP is making highway driving 10-20% safer, and obviously not causing any new city accidents when it’s off.