The Brief The National Highway Traffic Safety Administration is investigating Tesla after reports that parents had to break windows to get their children out of the car. The investigation comes after numerous reported problems with opening Tesla doors in recent years. Tesla is under investigation for potential defects in car doors that reportedly left children trapped in the back seat. Of those who reported incidents, none saw a low voltage battery warning before the exterior door handles stopped working. Drivers trapped in TeslasThe backstory:The investigation comes after numerous reported problems with opening Tesla doors in recent years.