Adding roads, changing ground textures

[Spin]

I'm working on a scenario where I need to add roads to the route itself. I've looked all over but cannot find any tutorials on adding roads.

Also, is there a way to replace the ground layer (farm field) with grass for a particular scenario?

[Bob Artim]

Never tried painting or new roads and tracks in a scenario. I do not believe it can be done as you would be changing the route.