A kit for constructing a commercial vehicle supplied ex-works as a flat-pack package using the vehicle chassis as a pallet. The kit includes components comprising: a chassis, an engine attachable to the chassis, located within and supported by the chassis, and a plurality of upright chassis members attachable to the chassis thereby to define at least a cabin, placed flat over the chassis. The component making up the kit can be restrained in place, such as by wrapping or tying with suitable film, bands or cords. Body panels attachable to the chassis uprights can be supplied, placed flat over the chassis. Brake line, a wiring loom and major drivetrain items such as the engine, differential and propshaft may be pre-attached to the chassis in their final locations before shipping the kit. With suitable spacers, several such kits could be packed for transport in a single vehicle or container.