That looks really good. Your work continues to amaze.
I applaud those that model open autoracks, in any scale. It takes a little bit of crazy to do it...assuming you are modeling a loaded car, you're guaranteed to have a single freight car that costs more than a locomotive.

So I suppose if someone had a 5-figure pile of cash sitting around they could make a nice (loaded) unit train of these.

It would be an epic train though.