Apparatus and related methods relate to a trailer with interchangeable modules. In an illustrative embodiment, a trailer may be configured to be towed by a pickup truck with a bed. The trailer may, for example, include a chassis that is at least partially exposed. A drive module may, for example, be configured to generate rotary motion from an energy storage module. A plurality of interchangeable modules may, for example, be configured to selectively and releasably couple to the trailer via mount modules. The interchangeable modules may, for example, include a fluid transfer pump module configured to transfer fluid from an inflow conduit to a receptacle external to the trailer. A pressure vessel may, for example, be configured to transport hazardous gas. A flatbed deck may, for example, be configured to cover the chassis in at least the location of the pressure vessel. Various embodiments may advantageously provide seasonal adaptability.

A wear guide for cargo track systems comprises a body configured to be positioned between a foot's engagement portion and a track's guide recess, creating a protective interface that prevents metal-to-metal contact. The body includes at least one interface member positioned at one end to inhibit edge contact and binding during translation along the track. The interface member may extend beyond the foot edge. Retention features include end caps and through-holes for fasteners. The foot may define recessed sections dimensioned to receive the wear guide such that it projects beyond the foot's original engagement surface, providing the primary contact interface with the track. The system reduces wear, prevents galling and binding at critical edge locations, extends component life, and enables smooth translation while being field-replaceable without requiring replacement of expensive structural components.