I am presently scratching a set of passenger cars, I was wondering if anyone has ever scratchbuilt rolling stock with cardstock? I have all the sizes, but is there anything else I need to know? I'm limiting my passenger train to two cars, which I plan on using as a commuter train for now until I complete my bi-level West Coast Express commuter train. I'll post pictures of the finished cars as soon as they are done. It's quite a challenge scratchbuilding rolling stock. But it's also alot of fun