> Then what? You have 20 palettes of dog chew toys or asian pears....? Some of the goods have serial/tracking numbers.
Your comment made me laugh. Very true. Besides the fact that there is no black market for 20 palettes of dog chew and asian pears, the other problem is that unless you successfully steal a few highly valuable items, you would need one or multiple trucks to carry what you've stolen from that semi. You probably don't want to use the semi you just stopped, because it could have multiple GPS trackers onboard.
If you knew that you were stopping a truck full of laptops, then maybe it would be worth it somehow, but as you pointed out, laptops have serial numbers... And then what, you load a few hundred laptops into a van, but your van is now "burned". It's been photographed and you need to dump it somewhere, further complicating your operation.
Then, I don't know, it seems to me like people just love to come up with imaginary reasons why self-driving cars/trucks can't work. They seem to fail to realize that, well, we can come up with even better safety measures. You could make your automated truck very hard to open. It doesn't need to have a lock that can be opened by a human with a physical key. It can have an electronic lock inside the door, shielded behind a 5mm thick steel plate, that's completely invisible from the outside.
You could also install a remote-controlled drone on top of the truck (value If robberies of automated trucks became rampant, I'm pretty sure we could come up with many ways to mitigate the problem. I mean, heck, we could even install pepper sprayers around the truck. But the robbers can just wear full-face masks, you say. Sure they can, but those masks aren't foolproof, and it's an additional piece of logistics they need to deal with.