> It is interesting to note that as time goes by, what was fancy once eventually becomes 'standard' and the features get into the mid-range priced cars as well. Auto-shift is probably a good example. Automatic rear trunk opener is another and so on.

Is that because the high-end carmakers invest R&D in reducing costs of making these fancy door panels, which trickles down into mid/low-end cars? (I've heard similar things said for other more software-related car features like traction control or abs, but I'm interested if this is also the case for manufacturing)