Here's a selection of cars that I don't have anymore.
I weathered this Landmark covered hopper a few years ago. It turned out quite well, but I really didn't have a use for it on the JSSX at the time, so I sold it off at a train show. I still wouldn't really have a destination for it anywhere on the railway, but I do like it and kind of wish I'd kept it anyway.
This GT autorack from Walthers is one of my earlier efforts in weathering. I masked off each of the panels and rusted them individually with my airbrush, and then hand-brushed on the rust streaks afterward. This one had no real purpose on the layout, so I sold it at a train show.