The Darker Side of Analog-Digital Convergence

I performed the ultimate computer science move on my Ford Focus today: My radio stopped working. so, at a Red light, I turned the car off, started it up and, voila, the radio worked again. I don't know why and I venture a guess that Ford would not know why, but there you have it. Coincidentally, as I drove off, there was a story on NPR about how Farmers are now having to jailbreak their tractors to perform repairs that they have otherwise been doing in the past, but are now precluded from doing by John Deere, as only authorized dealers have a USB key loaded up with the right software to unlock the system for repairs and testing. This blending of analog and digital worlds is disconcerted. What if the zipper on my pants encounters a buffer overflow error when I have to pee? Will I suffer a personal buffer overflow? ;-)