I agree. Even with force feedback I don't think these interfaces will ever be as good as physical knobs, buttons, and sliders. "Good" in the sense that they can be reached, perceived, and manipulated with our senses completely without eyesight. For instance I recently drove a Volvo V90 (every control on a large flat screen) and the climate control for seat heating was tiny and slow to update -- I had to take my eyes off the road to find it, aim at the specific setting I wanted, and wait to see whether the setting had changed as intended; by contrast in my current Volvo V60 there are physical buttons that I press (without aiming because I know exactly where each one is) and they instantly change the settings as desired.