Our simulated traffic agents act individual and unforeseeable - because random-/AI-based - to challenge the test vehicle with its functions and sensors during endurance test runs. Different aggressiveness levels play a role as well as different cultural backgrounds. So we provide real-life traffic for virtual software tests (SiL) as one can observe it, standing on a real road. With our software ADAS and automated driving functions and sensors can be tested and optimized in simulation early, fast, safe and cost-efficient.