Researchers find that after hooking up to your car’s diagnostic port they can interfere with its operation. Like disabling the brakes. Hmmm, imagine what you might be able to do with an Arduino and some deliciously malicious code. Just kidding.
Suggested reading: Network World’s Car hackers can kill brakes, engine, and more: Hackers develop a program called CarShark to access a car’s Controller Area Network (CAN) system.