Bill,
I started doing some research on the web to find info on the coach. So far I've found sites that claim that LCRX belongs to both the Lower Colorado River Authority and the Luzerne County Rail Corporation. Other information I've been able to glean from various sources is that there has been a push to establish passenger service in that area to New York City. Details are scarce, though. Perhaps they are refurbishing the coach for commuter service? Or maybe it's an office car, like you suggested... I may end up having to call these folks just to satisfy my curiousity!