Unidentified Freight Object

About a week or so ago at night I was stopped at a crossing in Opelika on the CSX line. The mixed freight train that came through had something odd at the end. I didn’t get a good look at it, except that it was big, seemed to have a caboose style stovepipe on top, and big block letters for “Man…” something. It looked like a jumbo sized caboose, but those don’t exist, do they?

I can just see it now, the Discovery channel new series.

That would be EXTREME Unidentified Freight Objects.

Guessing, I wonder if it might be some sort of moble office for major MOW projects?