Hack attacks mounted on car control systems

"The computer systems used to control modern cars are very vulnerable to attack, say experts."

"We are able to forcibly and completely disengage the brakes while driving, making it difficult for the driver to stop," wrote the researchers. "Conversely, we are able to forcibly activate the brakes, lurching the driver forward and causing the car to stop suddenly."

Source: http://news.bbc.co.uk/2/hi/technology/10119492.stm