text: To me, that's the only problem...the cars aren't fully in control. Evidence from the article states, " Google modified Toyota Prius uses position-estimating sensors on the left rear wheel, a rotating sensor on the roof, a video camera mounted near the rearview mirror, four automotive radar sensors, a GPS receiver, and an internal motion sensor." Seems like alot of sensors! I would really love to nap at the wheel, but it seems as though I would be unable to proceed in doing that. So that is something I would definetely encourage manufacures to establish...no sensors, just pure driverless cars.