Re: Perhaps...
Here are a few - note that I'm talking about hypothetical future vehicles with working self-driving:
Interesting that you should include the word hypothetical because not only are the vehicles currently hypothetical but so are the benefits that you listed; they will remain as a wish list until such time as they have been proven to have been realised.
One in particular warrants further comment: Driverless freight vehicles cut freight costs by around a third. I'd like to know how that has been calculated; just the fuel cost for an hour's running is well in excess of what the driver costs.
In addition, the driver is normally responsible for assisting with unloading / loading the vehicle; in his or her absence who will carry that out? Loading is singularly important because it is essential that the load is properly spread to even to distribute the weight on the various axles and that it is secure and cannot move when the vehicle is moving. It is a legal requirement and if he / she gets it wrong the driver can be held liable in Court.
I'll believe that AI really exists when it can reverse an articulated vehicle round corners / into a tight space / etc without mishap. Will this hypothetical LGV be able to refuel itself with either diesel or electricity when the need arises?