It had to happen, and actually it's been happening since 2010: Google has developed a system using sensors, lazers and GPS positionning, enabling a computer to really see the road to up to 70 meters around the vehicle.
And this is no science-fiction nor PR stunt: this computer-driven car, based for the moment around the obvious emblematic Prius, has been given its licence in the State of Nevada. The car has already been driven for more than 200.000 miles and Google is adamant to say it may spare the life of up to a third of the annual road accidents victims. There are a few alarms systems used in today's pointy end of the market cars, but none allow for the car to be driven automatically, like the Google Car demonstrates in the video.
And it seems to be the next step in automotive security: once you were alarmed by a buzz that something was happening, but in the near future the steering wheel will take over and gain control over you if the car's system sees a danger it thinks you haven't notice.
I'm fine with it, up to a point, as this might be the good side of this new technology. The bad side is that you're being traced already by your GPS system, now...