Generate a 90-second cinematic video of a futuristic megacity at dusk, featuring sleek flying vehicles smoothly navigating between towering skyscrapers with neon lights. On the ground, a dense, continuous flow of futuristic cars moves along illuminated highways and city streets. The camera should smoothly follow the action, showcasing both the aerial traffic and the bustling ground movement in a single, cohesive scene. High detail, cyberpunk aesthetic, realistic lighting, smooth motion.