It's called "platooning" and is expected to be THE way to travel on highways in about 10 years time.
Vehicle platooning is a convoy of vehicles where a professional driver in a lead vehicle drives a line of other vehicles.
In the video, the steering wheel of the following car is seen moving by itself as the vehicle follows the lead truck around the country road test track. The driver is able to drink coffee or read a paper, using neither hand nor foot to operate his vehicle.
Development of the