The Freight's locomotive (available only in a gray color) is based on a EMD SD40-2, while its flatbed cars are actually stripped down chassis of the locomotive; the flatbed cars have ample room to carry up to a full size car along with the player, making the train somewhat useful in travel. In addition to flatbed cars, game files reveal that a boxcar variant exists but remains unused in the game;, the boxcars can be pulled instead of the flatbeds on the PC version of the game by simply opening up the vehicles.ide file and switching the ID numbers of freiflat and freibox.
The Freight itself is presumably loaded off the Freight Train Station in El Corona north of Unity Station, or at the Sobell Rail Yards. Like the Brown Streak, the Freight can be used to start delivery missions which are necessary to achieve 100% game completion.
The train has some realistic effects, particularly the ability to derail it at high speeds. The train begins to shake above 47 m/s (~170 kph), at which speed it will derail upon turning. Trains are immune to all forms of damage, including weapon damage, fire and any physical obstruction, however derailment will render them useless. There are no 1st/3rd person views when driving or traveling in the train, and the cinematic view mode is the only view available. Some third party trainers can offer different viewpoints.
- If the train's engine happens to end up in water, it will stay afloat indefinitely, with the sound of the engine audible above and below water. The player can climb atop the unsinkable engine as if it were a stationary platform, a testament to the train's indestructibility.
- If the faster cars cheat is enabled, the Freight will appear more often.
- If Freight missons are started and then canceled, the train will go into a third person mode for a little bit, this also works with the Brown Streak.
- In the second GTA V trailer, a few scenes with freight trains are seen.