a bustling retro futuristic city during the day, bathed in bright, natural sunlight that reflects off the gleaming mirror-like surfaces of towering skyscrapers. The architecture is a blend of organic and geometric shapes, with buildings featuring sweeping curves and sharp angles, creating a dynamic urban landscape. The streets are wide and filled with advanced retro-futuristic vehicles gliding smoothly along designated lanes, while pedestrians move along elevated walkways that crisscross between buildings. The cityscape is vibrant and lively, with green spaces and parks integrated into the urban fabric, providing a stark contrast to the metallic and glass structures. The medium used a combination of digital painting and hand-drawn elements, with attention to detail in both the buildings and the movement of people and vehicles. This is concept art by Syd Mead.