Dials, buttons, levers, steering column paddles - all interface elements you can engage without taking your eyes off the road.
Personally, I prefer physical shift levers (prefer manual tranny, actually), but have driven cars with buttons and dials for gear shifting as well.
I don't know, and neither do you - Tesla is too cheap to put a real HUD into its vehicles.
BTW, that would have been really nice, and it would be an extra feature3 for which I would pay happily $$$$.
Unfortunately, the touch-screen is not a heads-up-display, nor does it provide any tactile feedback. And, it crashes and goes black on you every other week (or sometimes you have to reboot it manually). That leaves one with clumsy physical back-up buttons at the least ergonomic and least intuitive location in the car - the roof.
Lets admit it - sometimes Tesla does flat out dumb stuff.
This is one of those situations.
No need to invents excuses for this.
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