Unusual train

For a couple weeks now there's been a long row of train cars on a siding near Addison airport. There are about twenty five cars - all exactly alike, all brand new, and they present an unusual image that sort of takes you by surprise when you stop and look enough to realize what they are. I've taken about 30-35 pictures of them. I need to go back now with a tripod so I can control the aperture and get more cars in focus.