About watches, it depends on whether we are considering watches as jewelry (at which they don't suck at all) or as information delivery devices (at which they only deliver one type of information, which is typically readily available everywhere)
My Nokia 3110 was great at making phone calls and quite good at SMS'ing, so in that sense they didn't need to be upgraded. In the same vain we can say that we don't need watches that are better at keeping time. But cellphones of the late 90's sucked at a lot of things that are nice to have in your packet, such as games, news and reading.
So the question is, are there a lot of things other than time that are nice to have on your wrist? If yes, then the market fit Apple perfectly.
As those cars become more and more computerized, it's becoming clear: those companies absolutely suck at software and user interfaces. The interior of most cars today is an absolute chaos of buttons, screens, levers, dials, and indicators. It's like a wrap-around version of this:
http://www.blogcdn.com/www.engadget.com/media/2007/01/dsc_01...
Apple has something that Tesla does not: gigantic piles of capital. Apple has around $230 billion in cash, which is more than the annual gross revenue of Ford or GM last year. Apple is ready to scale from day 1. Whereas Tesla is following a careful growth strategy, using each model's sales to fund the R&D on the next.
I don't care if you have a trillion dollars, you can only tool up manufacturing capacity so quickly. "Apple is ready to scale from day 1" is laughable. Cars are not iPhones you can outsource to Foxconn for production.