https://www.reuters.com/article/us-tesla-safety/tesla-scrutinized-by-u-s-agency-over-model-3-safety-claims-bloomberg-idUSKCN1UX0LZ

The U.S. National Highway Traffic Safety Administration (NHTSA) sent a cease-and-desist letter to Tesla Inc last year for not complying with the agency's guidelines in its Model 3 safety assertions and subpoenaed the carmaker for information on several crashes, Bloomberg reported on Tuesday.