The rush to computerize your car is basically over, which means the rush to pwn it has begun in earnest. Fortunately (for the Bad Guys), security was never part of the design - for example, all of the non-critical components (like cell phones, music players, and GPS nav units) are on the same network as the critical ones (brakes, throttle, transmission control).
I mean, what could possibly go wrong?
Researchers who have spent the last two years studying the security of car computer systems have revealed that they can take control of vehicles wirelessly.
The researchers were able to control everything from the car's brakes to its door locks to its computerized dashboard displays by accessing the onboard computer through GM's OnStar and Ford's Sync, as well as through the Bluetooth connections intended for making hands-free phone calls.
Yes, I've been harping on this for some time now, but that's about as precient as predicting that the Sun will come up in the east or that Democrats will raise taxes.
So you might want to rethink that sweet Z4, and get one of these instead. At least it can't get hacked wirelessly.