Taking your eyes off the road to adjust the AC is a terrible UX. And as for 'voice commands' bless your heart to imagine every car doesn't have screaming kids in the back seat or a driver with a heavy accent. I want a knob.
Yes I don’t think many people actually often need to fiddle the AC settings while driving. And that would be a very seldomly used knob when you have a good automatic AC.
Last software update allows to map many functions to long-press of steering wheel button. So you can assign AC temperature to it, then you don't need to take your eyes of the road - just long-press left button and scroll up/down.
