Create a fast-paced first-person perspective flight through a futuristic, abandoned American city. The city is overtaken by nature, with plants and lush green vegetation covering skyscrapers, office buildings, and streets. A reflective, mirror-like sphere hovers at the center of the frame, maintaining a constant distance from the camera. The sphere perfectly reflects the environment, showcasing distorted images of the overgrown city, sunlight, and dynamic camera movements. As the camera sweeps quickly through narrow alleys and soars above tall buildings, the sphere moves in perfect synchronization with the camera, creating a steady focal point. Abandoned vehicles covered in moss and rust are scattered along empty roads, while sunlight pours through gaps between buildings, illuminating the overgrowth and creating a tranquil yet eerie atmosphere. Smooth, dynamic camera movements enhance the fast-paced, immersive experience, with a hint of horror as nature reclaims the city after the departure of its inhabitants.