While they're shown as a specific scale

The Trainz SKU for this item is P11646525

This is a Bowser 37948 N Union Pacific Air Slide Covered Hopper #20431

You can also connect to a traditional tubular O/O27 track lock-on or to an accessory power supply (sold separately)

Western Models sw23 1:48 1949 Chrysler Crown Imperial ProductID_11513262 While they're shown as aThis is a Western Models sw23 1949 Chrysler Crown Imperial Condition: Factory New (C 9) Operational Status: Functional Original Box: Yes (P 9) Manufacturer: Western Models Model Number: sw23 MSRP: $29. 99 Scale Era: O Modern Model Type: Vehicles The Trainz SKU for this item is P12413093. Trainz Product Id: 12413093