LOL! You think I'm a right-wing nutjob? That's weird; I more often get accused of being exactly the opposite. In reality, I'm a moderate anti-authoritarian, and want both government and corporations to GTFO of my business.
Besides, you're a dumbass, since you apparently fail to understand that negligence is a completely separate, irrelevant issue that's already covered by existing laws. I would already be liable if I modified my car to be unsafe, and computers don't change that!
Go re-read that last sentence, and let it sink in. Then read it again. Got it? Good! Now you'll realize that the stunt these automakers are trying to pull has nothing whatsoever to do with actual safety, and everything to do with them trying to assert control over their customers' property, so that they can restrict customer choice and increase their own power and profits. Nothing more, nothing less.