Just found this link Duplicate Slide: L&WV Laurel Line Freight Motor Trolley -- Antique
have to copy and paste it its shows a trolley pulling a freight car..
Parts of a passenger trolley that had seen better days rebuilt into a freight motor by the shop. Not an uncommon action to take older pass equipment and rebuild into something else to do a MoW job or be a freight motor or some sort. Take a look at some of the W&OD equipment - freight motors built out of box cars and some funky shop built motors, too. One of the fun bits of traction modeling - there was a lot of creativity in play re-purposing whatever was on hand to make whatever was needed