This is an idea similar to driverless / autonomous vehicles. Great on paper, but nigh impossible in the real world.

Imagine if you will a road train of several dozen trailers and a lead driver: what happens if wildlife jumps in between the lead driver and the rest of the convoy? Or if the lead vehicle has to make an emergency correction? Or if other traffic merges into the convoy? Or one of the trailers crashes?

There are so many ways this can go wrong and only one perfect scenario in which i all “just works”.