That's exactly the point: you want the button you need to be there.

Rarely used buttons may be hard to find and yet very important in specific situations. If car companies really want to use some form of AI in the UI, that's going to be bad in almost all cases, except if they use it to help you find that important but rarely used buttons in those rare situations where you need it.

Of course it should also still be immediately accessible in its normal spot.

Safety-critical controls shouldn't be reliant on a blackbox to determine whether they're visible or not.

There's a reason things like planes and industrial equipment don't have dynamic interfaces.