Cinematic 8k wallpaper of sleek cars racing through an intricately detailed futuristic city; the scene captures extreme speed with motion blur and luminous reflections dancing across the polished exteriors of the vehicles. The atmospheric lighting enhances the hyperrealism, showcasing subsurface scattering on buildings with ornate architecture. The composition is intensely cinematic, reminiscent of high-energy promotional art trending on social media platforms like Instagram and Tumblr. Captured with a virtual f/1.8, 85mm lens, the image is ultra-detailed and of the highest quality, resembling VFX post-production with an ultra-realistic touch. Utilizing the power of Unreal Engine 5 for rendering, additional film grain adds texture while Redshift rendering ensures vivid HDR in 4k and 8k resolution. The scene is finished in Cinema4D, perfectly poised as an 8K 3D masterpiece.