I'm working on two new scenes on my railroad right now. 1 is a dining car restaurant complete with parking lot, flower s/ greenery, steps and a handicapped ramp. The other is a frac sand and aggregate transloading facility. They are in the design phase right now and will be being built over the next two or three months. I do not think that my current layout will last more than 5 years at the most, less than that if we move soon. It has been a good starter railroad, and a good proving ground. (And you can't beat free!). I would like to build these two scenes on some sort of base so they can be moved to the new layout when the time comes. Does anyone have any experience in stuff like this, or can recommend a good base material to use? I think plywood would be too thick and I'm not sure if styrene is going to be strong enough. I am afraid to lose the scenery, details, and hard work when it comes time to demolish the current layout...