"Animate a futuristic underground city with sleek vehicles moving smoothly along elevated and ground-level roads. Pedestrians walk along illuminated pathways and streets, their movements natural and varied. Neon lights and holographic advertisements glow vibrantly, casting colorful reflections on metallic surfaces. The city buzzes with life, with the sound of chatter and vehicles blending into the ambient hum of machinery. Above, a domed ceiling displays shifting artificial light patterns, simulating a dynamic sky."