MTH 20-4178 B&O Madison 2-car "diner - combine" passenger set.
This MTH set was introduced in 2006. These cars were additions to MTH 20-4078 that was also issued in 2006.
The MTH "combine" includes a side passenger door with step at one end and a baggage door at the other end. The MTH "diner" has a "kitchen" at one end. Both cars feature diecast sprung trucks and lighted interiors with seated passengers.
Photo of a typical prototype railroad "combine" car is shown with side door and step at one end.