This 40-foot trailer was spotted parked behind the Wagoner (OK) MP depot a couple of months back. Notice the TPZ reporting marks, as well as the blue "buzzsaw" logo.
That's a nice find. I can remember a few years back seeing an old MP lines bus downtown Colorado Springs. Unfortunately, it was buried deep in a fenced lot with a lot around it, so I never could get or find a decent angle to really see it.