Here is a MTH 20-68121 Southern Pacific 70' ABS RPO Passenger Car (Ribbed)

The Trainz SKU for this item is P11635999

The colors of the water surfaces correspond with the different degrees of contamination

along with operating cab roof vents

Trainz Product Id: 12332503

Broadway Limited 6872 N B&M EMD F7B Diesel Locomotive Sound/DC/DCC #4267B ProductID_11565211 Here is a MTH 20-68121This is a Broadway Limited 6872 N B&M EMD F7B Diesel Locomotive Sound DC DCC #4267B. Features: Unpowered B Unit, Paragon4 Sound & Control System featuring Rolling Thunder, Integral Dual Mode Decoder with Back EMF for Superb Slow Speed Operation in DC and DCC, Precision Drive Mechanism Engineered for Heavy Towing and Smooth Slow Speed Operation, All Wheel Electrical Pick up, ABS Body with Diecast Chassis for Maximum Tractive Effort, Premium Caliber