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Do you need to know how fast you're going? Yes.
Do you need to know how your car is performing? Yes.
Do you need to know where you are and where you're going? Yes.
We already have head-up displays that show car parameters, as well as navigation systems that help you get where you're going. This could be incorporated in to an HUD ("turn here ->").
Anything more would be information overload. I do not need ads to tell me how cool the store I'm driving by is (i.e. how much they paid for the ad), nor do I need neat pictures other people have taken in the vicinity.
Look at how they do it in airplanes: the pilots have the essential information in front of them, but can access other information as needed.
I've always thought ARM was a cool design. Simple, minimalist, sort of a latter-day PDP-11, one of those canonical architectures that just works. Simple chip, not many transistors, low power, good chip for mobile devices. It seems so obvious in retrospect. Especially since that's not what the designers had in mind. They were designing a simple chip because they only had a couple of people and that was all they could afford.
In one of the later scenes in Micro Men there is a whiteboard in the background with the original ARM requirements, right down to the barrel shifter.