Utilizing Car2Car communication, modern mobility concepts will improve in typical standards like safety and comfort. While driving this evolution of connected machines, it is also very important to keep a high level of Car2X communication to non-machine interfaces like human beings. Communication with pedestrians or human drivers is needed to establish a healthy acceptance of autonomous driving vehicles. In this communication pathway light plays a very important role. Modern vehicles have to implement an exterior communication content, easy to understand and easy to recognize, during daylight and nighttime. Therefore, new light sources and optimized car architectures are required to provide this Car2Human communication while maintaining legal requirements. Audi’s approach to digital light is the first step into a revolution of exterior lighting.