The Trailer is an un-powered utility vehicle found throughout Knox Country. Their usefulness can become immediately apparent, as repairing and hooking one up to a player's existing vehicle adds an additional 100 storage to their effective total vehicle storage.
While there doesn't seem to be a specific model the trailer is based off of, its design is that of a two-wheeled utility wagon. It is the only other utility vehicle that must be towed by a working vehicle other than the Advert Trailer.
The Trailer and its Cover variant can most commonly, if not solely, be found in trailer road accidents along Knox Country. As such, 4-lane highways have the highest chance of encountering these accidents.