A moody, high-speed illustration of a sleek Black Mercedes Benz AMG GT4, parked on a deserted, wet-section of the Reichstag boulevard in Berlin, Germany, at noon on a stormy day, with rain pouring down from a dark grey sky, casting a subtle rainbow on the wet asphalt, ultra-realistic, ultra-detailed, 8K resolution, HDR-enabled, rendered using Octane's advanced simulation capabilities, showcasing the car's aggressive stance, glistening raindrops, and reflected light on the wet surface, in a 16:9 aspect ratio, with an artistic take on the surrounding architecture, subtle reflections in nearby windows, and a hint of movement blurred in the background.