What's procedural? The meshes? Textures? I'm impressed that I wasn't able to drive into a void, a lot of times I see things like this and it's a single generat

What's procedural? The meshes? Textures? I'm impressed that I wasn't able to drive into a void, a lot of times I see things like this and it's a single generation pass that ends after 2 minutes of walking. Is it infinitely generating in chunks? Also what is the goal of the game? Is it a driving simulator, like ETS?