MTH Premier O Scale operating freight cars bring life and excitement to your O Scale layout. Sized to scale, each car is a perfect complement to any manufacturer's scale proportioned O Gauge locomotives. The car comes to life when parked on an operating track section. When the track section is activated, the car door will slowly slide open evidenced by a rush of foggy cold air. A worker inside carefully slides out the first pallet of refrigerated goods, tirelessly repeating the process until all the pallets are unloaded. The door then closes and the train can move up for the next car. Each operating car is offered in two car numbers which makes it even easier than ever to combine them into a mult-car consist. As with most of MTH's Premier Rolling Stock offerings, the operating reefer can also operate on the tightest O Gauge curves giving them even more added versatitlity to your layout.