The article did address that apparently the necessary sensors for commercial trucking use cases have only recently become available. I'm guessing it's related

The article did address that apparently the necessary sensors for commercial trucking use cases have only recently become available. I'm guessing it's related to how far the systems can look? Due to the involved speeds and stopping distances, truck systems need to be looking very far ahead. Anything nearby and the truck needs to be maneuvering instead of stopping, which is also non-trivial with the trailer dynamics.