Isn't a car a general purpose machine in the same sense that a computer is? Cars, at some point, were also "genuinely new and disruptive for all kinds of markets", just like computers were long before the Macintosh. I'd say that the Macintosh was little more than an incremental advance in a particular direction of personal computers, and I'll stick to my point that Tesla is just an electric care in the same sense the Macintosh is just a computer.