The Sony Playstation Society IV

All clouds are full 3D models to ensure accurate light diffusion from the sun. They’re calculated at massive distances in a fully volumetric form, so thin clouds cast lighter shadows than dense storm clouds, and their color impacts the feel of the landscapes and cars.
Each location has a draw distance of up to 200km to the horizon and even simulates the curvature of the earth in both skies and terrain. Distant landscapes are built out and fully modelled, instead of “painted on,” to ensure that they support the dynamic, volumetric nature of the skies and lighting.
The Indian track Chungara Lake boasts a 19,000-strong flock of pink flamingos, all behaving independently of each other
In-game, the engine sound reacts to your perspective. Pan around a stationary car gunning its engine and the sound shifts with the camera position (relative to where the engine is). When you race, the engine sounds are different based on which of the six camera views you choose — inside or outside of the car. You’re not hearing the same engine audio with a filter — it’s all recorded separately. The recordings were so accurate that BMW and Mercedes-Benz AMG requested copies to replace their existing library.