Steering wheel controls are easy to use. So are door controls. Duh. In fact, on the Volvo S80, they're even easier to use, so that's a double duh! No BMW/Audi mind games here, bunky. Just straightforward controls, as if it was a Lexus or something. On the steering wheel, for example, there's a LARGE volume symbol for volume up, and a small symbol to turn things down. Same goes for the Adaptive Cruise Control buttons on the door side of the wheel: one button to shorten the distance, represented with a short arrow, and another button with the opposite visual cue/result. On the door, a collection of power window switches reside, with auto up/down, along with rearview mirror controls set out in an intuitive manner.
