But even semi-controlled isn't fully controlled. I've always wondered about what happens when the system really gets off the 'happy path'. Maybe there's an acc

But even semi-controlled isn't fully controlled. I've always wondered about what happens when the system really gets off the 'happy path'. Maybe there's an accident, and police are directing traffic? Does the truck understand hand gestures (which aren't necessarily standardized)? Or maybe the police aren't there yet, damaged cars are blocking the road, and the truck may need to get out of the way for emergency services to arrive (possibly requiring going a little off road). These happen less on highways, but they still certainly happen, and not having a human in the loop can make things dramatically worse. Do they have to stop at weigh stations? Do they understand the signage? I suppose most would have the system where you don't have to stop, but I don't know if all weigh stations support that. There are lots of instances you can imagine that don't require driving skills, but actually require a general intelligence with knowledge of the world around them. (I suppose you can have a command center where someone can take control or give commands to the truck. Sounds tricky but possible).