Quote - > Quote - How would you go about modeling something like a Rollercoaster anyway? I imagine the tracks would be the most tedious and detailed part.

Write a script to create multiple instances of the geometry?

Hell, I wonder if BB could create procedural tracks. 

Well, now that you mention it, I gave it a little thought and in Blender, I think all I'd have to do is model one section of the track, then use an array modifier to follow a Bezier curve. so now I've got to find out if I can do something like that.