Believe me -- I understand that. I didn't know the Pittsburgh cabs had drivers; I simply assumed that they operated on a very limited street network and had no "automated" interaction with other vehicles or pedestrians.
Your assumption is understandable...because dozens of moronic reporters have declared that there are driverless cars driving around in Pittsburg.
In reality, these ‘driverless’ cars have two people in the front seat, helping it navigate.
A ‘driverless’ car is like the ‘affordable’ care act, or ‘unbreakable’ plastic combs.