A massive, floating subway train soars over an urban landscape in a breathtaking display of retrofuturistic design, blending elements of cyberpunk and sci-fi genres. This scene, captured with cinematic lighting and underscored by a foggy, gloomy atmosphere, resembles an old-school subway train that hovers mysteriously above the city. The real photographs used to create this image convey a sense of realism, making the futuristic concept of a hovering train appear as though it could exist within our own world. This imaginative scenario, evoking the technological advancements and imaginative possibilities often explored in science fiction, is a prime example of best practices for –sref in AI image generation, expertly integrating artistic styles with realistic photographic elements to create a visually compelling and thought-provoking image.