I've already encountered address errors where due to the GPS having erroneous data the driver was unwilling to accept he was not at the right place. How do you handle a robot that KNOWS it is droppng its load on you and it is wrong? A human can have the sign on the bulding and the street sign pointed out to them to prove they are wrong. How do you reason with the software?
How many loads redirected by hackers before they need men to "ride shotgun" on the load?