This is scarier...
Charlie Miller and Chris Valasek - two top-rate hackers out of Indiana -went into the guts of a Toyota Prius, jimmied-around with thirty-something on-board computer units and were able to take charge of dang nearly every function of the car. Using a wireless laptop they can steer, put on the brakes, honk the horn, fake the speedometer reading, switch on the headlights and even tighten and loosen the seatbelts.
My dad has long proclaimed that "Cars only need gas, air and electricity to work: they don't need a computer!" After watching this video, it's hard to argue with that.
Crash here to read more about this amazing hack, which was funded by the U.S. Defense Advance Research Projects Agency (the kind folks who brought us the Internet).