It takes longer and requires more effort for me to vocally ask my car to change the fan/temp/seat (heat,cooling,position)/etc than to simply bump a switch/knob.

It takes longer and requires more effort for me to vocally ask my car to change the fan/temp/seat (heat,cooling,position)/etc than to simply bump a switch/knob. I love a screen for configuring my front dash and another one for maps, certain settings, etc. But you absolutely should have tactile interfaces for various things.