My car has a physical knob for the volume, which can also be pushed in to disable the entertainment system entirely. If I need to turn off the radio in order t

My car has a physical knob for the volume, which can also be pushed in to disable the entertainment system entirely. If I need to turn off the radio in order to give full concentration to driving, I don't need to navigate through menus in order to turn it off. I'd consider that safety critical.