As the owner of a modern car, PoS systems are in a whole different league than cars. In particular, PoS vendors actually care about making usage efficient.

In my car, if I want to increase the fan speed, I need to tap a small target, wait while the system lags out, and then tap a new target on a popup. Meanwhile, I’m trying to focus on the road at (effectively) infinity. It’s distracting and unsafe.

In my old, very well designed 1991 car, I could push the button to do this. It had two major benefits: it never moved and I could feel it. Touchscreens can’t replicate the feel of a button, but they could at least have the decency to keep controls in the same place.