A vibrant retro sci-fi scene set in space, featuring a 1950s-style diner perched on an asteroid with neon lights casting dynamic hues across its metallic surface. Flying cars zip through the starry expanse, leaving trails of light in their wake. The cosmos is alive with swirling galaxies and colorful nebulae, creating an intricate backdrop. The diner, with chrome finishes and checkered floors, is bustling with futuristic beings enjoying their interstellar meals. The image is rendered in stunning 4K, capturing every detail with vivid clarity and a lively color palette.