Why not operate trucks like drones? Why does the driver need to sit in the vehicle all the time? Have rotating drivers, no need for rest times of the machine e

Why not operate trucks like drones? Why does the driver need to sit in the vehicle all the time? Have rotating drivers, no need for rest times of the machine enforced by the limitations of the human body operating it. You can then gradually phase in auto-pilot modes on highways, so that one operator is responsible for multiple vehicles. Already happening in combat drone space. As they're not transporting passengers it is an easier sell. Semi-autonomous drones with remote pilots/drivers/captains should change the game in trucking, shipping and freight trains.