The P in FP45 indicated a passenger diesel with a steam generator for train heat

Here is a MTH 20-67125 Chesapeake & Ohio 70’ ABS Full Length Vista Dome Passenger Car (Ribbed)

Here is an MTH 30-73148 MLB - Boston Red Sox Modern Tank Car

Road Number: 2178

08 sec/60 deg @ 6v (no load) Length:1

Broadway Limited 6111 HO Linde High-Capacity Cryogenic Tank Car Ready to Run VariantsUnitPrice_number_82.92 The P in FP45 indicatedThis is a Broadway Limited 6111 HO Scale Linde High Capacity Cryogenic Tank Car Ready to Run . Features: Beautifully Detailed and Accurately Modeled,Precision Paint, Color, and Lettering Schemes,Many Separately Applied Details including Hand Rails, ladders, brake wheel, roof walkway,Detailed Underbody,Composition: ABS body, Diecast Chassis,Wheel Composition: Metal,Couplers: (2) Operating Kadee Compatible,Compatible Tracks: Code 70, 83, 100