The National Highway Traffic Safety Administration cited the additional complaints in an Oct. 27 letter to Tesla about the investigation the agency initiated in mid-September. The letter provides a glimpse into how NHTSA is proceeding with an investigation launched days after Bloomberg News uncovered a series of incidents in which people were injured or died after they were unable to open the doors of Teslas following battery-power losses or crashes. Tesla’s longtime design chief later told Bloomberg that the company was working on changes to its door handles.
