Wow that’s very informative, I never really thought in-depth about the voxelsystem but yes that introduces a lot of difficulty. To beat the uneven terrain there could be a wooden support that you can build or just the wood block to keep things even. I kinda just assumed to build them I would first flatten and build some kind of base block. Would definitely have to stick to just 90 degree turns. No switches or crossings but would allow the track to go a->b or b->a. That introduces collisions though. Inclines/declines would be it’s own challange for sure. If it’s simplified down to a few single track blocks with no big prefabs, the weight system should take over for things like bridges or floating tracks, makes sense any kind of bridge or variable prefab would be a lot of work.