"I'm not really sure what this is." This article is about an item or feature that is not currently available in public builds of the game. Its details may change by the time it is made publicly available.
A Freight Car can be attached to an Electric Locomotive or another freight car, and has inventory which allows transportation of resources over Tracks. Freight cars can be loaded and unloaded via the Train Docking Station.
Its description states that it requires 5MW of power to operate, although it requires none.
A train with four Freight Cars
at train docking stations.