text: Firstly, one of the main reasons why we still do not have those cars is because companies haven't made the cars act like if a human is driving. Google has added position-estimating sensors on the left rear wheel, a rotating sensor on the roof, a video camera mounted near the rearview mirror, four automotive sensors, a GPS receiver, an inertial motion sensor to a car. All this is necessarry for the driverless car but still they have done all this, it isn't trudly driverless.