From a road user's point of view, Audi's headlights are my least favourite. In the UK, emergency vehicles use blue lights. If you see a blue light it is unambiguous and you can be sure that an emergency vehicle needs to get by. Seeing a blue flicker in the peripheral vision will therefore demand your attention. However, so many times this blue flicker turns out to be Audi headlights. I know what they are doing but whatever it is it's too clever. Cars are far too dangerous to play around with this nonsense.