One of the Cumbres & Toltec parlor cars in Antonito, CO at sunset: Silver Vista and Parlor cars of the Durango & Silverton at Durango, CO Amtrak Pennsylvanian seen from pedestrian bridge at Altoona, PA: Westbound Capitol Limited crossing the Potomac at Harpers Ferry, WV:
Rail fans come up with strange names to call things. Maybe on the bidirectional Talgo trains, they have a non powered "cab" at one end of the train called a cabbage?
OK, I remember now. Amtrak converted some of its old F40PHs to non powered cab units. They removed the prime movers and installed a baggage compartment. Thus cab/baggage or cabbage for short.