i am going to add a bit of oil on the fire

having an idea and presenting it as a concept is relatively easy because concepts most of the time are not subject to the full enforcement of the laws of economics, ergonomics and sensible marketing driven design
being able to translate a groundbreaking conceptual idea into an economically feasible, ergonomic and mass produced "item" is even harder than the "concept" phase
one could argue that the roots of the "bangle butt" lie not in the Z9 concept, nor in the MB maybach concpet, but rather the BMW 2002 which also had a clamshell boot, or other older cars
similar things can be said of I-drive
MB has been offering knob control of their commands since its early days but the knob was always placed next to the monitor, and as a secondary control next to the buttons, it is the concept of taking this knob and giving it the preponderance and primary status it has, in placing it around the armrest that makes this a groundbreaking concept
and even more, it is the ability to take the siemens/mb/whatever concept and making it into a viable product for daily use in such a critical "tool" as a car, tht makes the idea really pionneering
the "idea" in todays capitalist engineering modalities is no longer of much importance, given enough money and resources one could arguably produce any idea, the real importance lies in being able to mass produce it in an economiclaly feasible matter