I used the term extinct in a sense that bank tellers are pretty much extinct today because % of transactions going through real human tellers is very low. Most people use ATMs and online banking.
You correct to say that a lot of things about truck driving might not get 100% automated in next 20 years but many aspects will reducing the truck driver's salary and skill expectation. For example Wallmart or Amazon could build warehouses where trucks will be loaded and unloaded in 100% automatic fashion. For majority of the interstate driving trucks might simply go with minimal supervision and driver will have to take control only in 10% of total time. All this will make trucking less lucrative and less productive occupation. That is as good as extinction.
You correct to say that a lot of things about truck driving might not get 100% automated in next 20 years but many aspects will reducing the truck driver's salary and skill expectation. For example Wallmart or Amazon could build warehouses where trucks will be loaded and unloaded in 100% automatic fashion. For majority of the interstate driving trucks might simply go with minimal supervision and driver will have to take control only in 10% of total time. All this will make trucking less lucrative and less productive occupation. That is as good as extinction.