Initially I tried making this using several straight segments of track. In the end I created a large tube (180m wide) and skewed that. The final version will have better textures, and stuff covering up the subway. There will be a railway station at the bottom next to a car park next to a road that runs along the boardwalk. The width of the torus was set to come down at that point.
The terrain of the whole island's being exported to Leveller/L3DT for further refinement (but not today). As you can see on the map si-99 has Octo's flat above it, and there will be a bridge to si-10 from it. The area west of the central urban area is the remains of a "Prim Quarry", where raw prims were mined for many years. The process left the soil toxic and it would cost heaps to clean up. The rest of the island will be an industrial holiday mix.
