Case in point: I was in a new Volvo XC40 just yesterday and the fans were going like crazy. I tried adjusting this on the big screen in the middle but ended up having to park and adjust it while standstill because I couldn't figure out how to do it without taking a (long enough to crash) moment to look at the screen to know where to point and drag. Before they went on board with the touch screen craze they had physical dials for this, did the job every time. Mercedes have buttons, which is less ideal, but still better than a touch screen I have to navigate through.