Wow! Who would have thought that the concept of "intellectual property" would go this far? This isn't about weather tinkering with the vehicle's control code would cause the brakes to fail, or some legitimate safety issue, or even as Brush Wolf pointed out, evironmental concerns, but copyright! WTF?
I could see a company wanting nobody to tinker with the firmware for liablity issues, but copyright violation? That is, "This code is our property, and even if you buy a copy, it's still ours!"