well thats the idea! you add on to it. I by no means said you should only have a bent oval, i just have no idea what kind of industries or anythign you'd liek in the layout. if you could give me an idea, i might make you something, but its your layout, do what you want. i merely made the outside of it to give you an idea of the shape layout that would fit. you could put all sort of switches and crossings throughout the layout if you'd like to.