Create a vibrant, retro-inspired travel poster of Chicago, capturing a lively nighttime urban street scene. Depict a bustling avenue with classic mid-century cars driving towards the viewer, their headlights casting long, glowing beams on the road. Flank the street with rows of buildings, adorned with warm-lit windows, banners, and lush green trees, illuminated by glowing vintage streetlamps. In the background, showcase Chicago's iconic skyline, featuring the Willis Tower and other prominent skyscrapers, with a crescent moon and stars shining in a clear night sky. Use a rich and bold color palette, blending deep blues, purples, reds, and golden hues, creating a dramatic and nostalgic atmosphere. At the top, include the word 'CHICAGO' in a bold, retro font, prominently displayed. Ensure the design evokes a lively, nostalgic, and cinematic feel.