It's helpful to know that the lack of physical buttons isn't just a trend pushed by designers-the bean counters like it, too. It's quicker-and therefore cheaper-during assembly to just fit a capacitive touch module that controls multiple settings or switches than it is to have individual buttons, each connected to a wiring loom. Which is why we're seeing the controls for heating and cooling the interior, the headlights, seat heaters, and more move from knobs and dials and sliders and buttons to touch panels.