I watched a show on a VW experiment on a simplified autodrive system from about 8 to 10 years ago. The system worked by forming "trains" of cars, with a driver in the vehicle in the front. Additional vehicles would then pull up behind them and turn on the system. The car then pulled itself right up to the one in front, perhaps a few centimeters apart, following the leader. Additional cars could add themselves to the train.
Does anyone recall what this might have been called? I can't seem to find anything on Google.
Maury