Machine Argumentation. Can We Replace Taxi Drivers by Robots?

We need ethical non-monotonic action logics to control machines which interact heavily with humans. Such logics face special problems and require features which we need to recognise and to address. We believe that injecting argumentation methods into action pre-conditions is possibly the way to proceed to model what is needed.
To get an idea of what is needed we must investigate a typical problem of replacing a human with a robot operating in a highly interactive environment.
This paper focuses on replacing a human taxi driver by a robot.
Robot driven cars are already under production and so there is an urgent need for modelling the kind of Artificial Intelligence/Logic/Norms/Ethics which is to be involved and installed in the mind of the Robot.
This is research in progress.