This is an interesting topic. Great comments and ideas by everyone!
I have a small shelf layout that is 3 feet deep. I use only the front 2 feet for track. The back 1 foot is used for buildings and scenery so that I can give the appearance of depth. Here are two ways I have tried to add disappearing streets.
First is by having the street turn as it approaches the backdrop and then hiding it behind a building. Note that the building where the road approaches the backdrop is a photo glued to the backdrop.
My second attempt is to continue the road into the backdrop by blending it into the backdrop scene. This is a section that I am obviously still working on. The background is a color photo from the 1950's.
