BMW is showing off a concept car at CES that lets its occupants use hand gestures to control its entertainment system and heating, and even send commands to their smart home kit from afar. <br />The idea is to let the owners have a more relaxed experienced when the vehicle is in self-drive mode. <br />The automaker's head of user experience Holger Kampf showed the BBC's technology correspondent Rory Cellan-Jones how it works.
