Build an immersive first-person roller coaster web experience: the track floats in a blue sky, and the material has a flowing effect along the spline direction (implemented with a custom GLSL shader). As the coaster car accelerates along the spline track, the wind noise and the pitch/frequency of screams will vary with speed, and the UI displays a real-time “Fear Index” score. The camera should be tightly attached to the car’s nose point of view and include motion blur that becomes more pronounced at higher speeds. Implementation should prioritize React Three Fiber and the Web Audio API, and it must run smoothly in common browsers.