A high-definition illustration of a sleek Black Mercedes Benz AMG GTR parked on a glistening cobblestone street in Berlin, Germany. The scene is set at midday under a rain-drenched sky, capturing the moody ambiance as droplets dance on the car's polished surface. The city's historic architecture forms a subtle backdrop, slightly blurred to emphasize the car's sculpted design. Reflections are crisply detailed, heightened by HDR rendering, adding depth to the wet pavement. Soft ambient light filters through the clouds, accentuating the vehicle's contours. A touch of vibrancy is added with colorful umbrellas of pedestrians passing by. The image maintains an ultra-realistic quality with 8K resolution, heightened by the Octane Render's precision.