See - Light
Lighting configuration "bull": The LED daytime running lights can be designed to underscore a vehicle’s character, just as eyeliner emphasizes an eye...
This fundamentally alters the body language of Audi models. “The lighting configuration of yesteryear – the radiator grille along with the round lights – called to mind the face of a friendly bear,” notes André Georgi, Senior Designer of Lighting Systems. Nowadays: “The LED daytime running lights on the R8 symbolize the horns of a bull charging full speed ahead, bursting with vigor and pride.”