US watchdog opens probe into Tesla's Cybercab self-certification

Tesla's Cybercab's wheels have only just hit the asphalt for its commercial launch and the autonomous vehicle has already attracted the attention of the US National Highway Traffic Safety Administration (NHTSA). The body announced an investigation into Tesla's self-certification of the vehicle at the weekend. Central to the probe is the fact that the Cybercab famously lacks conventional controls. The NHTSA says there are "clear vehicle performance requirements" – stuff like brake controls