https://www.reuters.com/article/us-tesla-autopilot/u-s-safety-agency-says-did-not-assess-tesla-autopilot-effectiveness-idUSKBN1I334A

A U.S. traffic safety regulator on Wednesday contradicted Tesla Inc's claim that the agency had found that its Autopilot technology significantly reduced crashes, saying that regulators "did not assess" the system's effectiveness in a 2017 report.