In this specific idealized scenario the driver has something else he would rather do (another production of value - care for children, writing a novel, playing

In this specific idealized scenario the driver has something else he would rather do (another production of value - care for children, writing a novel, playing video games) or else he would offer to drive the truck for less money than the automaton costs. So that driver's alternative production + the value from the automaton is the net positive.