text: My last reason kinds of ties up with my second reason. The car is said to be loaded with all sorts of sensors which includes one on the left real wheel, a rotating sensor on the roof, a video camera mounted near the rearview mirror, four automotive radar sensors, a GPS receiver, and an inertial motion sensor. With all these sensors you still aren't guarenteed full safety. The car is also said to make a 3-D model of the car's surroundings. And you still need to be ready to take over the wheel in certain situations.