They were made years ago actually. They were 'modified' in that they took an 85 foot car and simply shortened it to 65 feet is all. I suppose you could buy 85 foot cars and cut them, but myself I am not that good sooo. Or look on ebay or something, maybe someone is selling old cars. Another option would be to use old style cars as they were shorter as well. Some as small as 50 feet. You could find them at Walthers I think. Not sure cause I don't buy from them. Anyhow, old time stuff is shorter. Hope that helps.