Kortenberg is a commercial project done by Patric Verstraete for a client. Thanks to Forest Pack and RailClone I had a great control to make this project.
Those plugins are really fast and simple to use, but the most important thing is that you can save a lot of time, and never lose control of the project.
Forest Pack was used for the trees and vegetation, and the cutout people. Railclone was used mostly to make the pavement around the project.