Mike, that is indeed a parade float - - a replica of one of the Monson engines that was built on a truck chassis as early as the 1950's. I believe that Elwin French, former engineer on the Monson RR, may have been involved in its construction. Perhaps due to construction constraints, the proportions are inaccurate - - the replica should be higher and/or shorter. The replica was kept in the old fire station (now the Monson Museum) when not in use but was disposed of a few years ago when the museum needed the space. I don't know whether it's now for sale or is a display piece in what appears to be a permanent yard sale on Junction Hill.