Terrifying in its total predictability and complete unexpectedness: mobile virus infects Lexus cars.
"I've even seen screenshots of major commercial aeroplanes with Windows 2000-based operating systems," said Mikko Hypponen, director of anti-virus research at Finnish firm F-Secure. "Cars are an obvious target for viruses. It's okay if you don't use the operating system for the engine and the brakes, but when you do..."
...Just another unintended consequence of ubiquitous computing that I often forget to take into account.