A system for packing a human-powerable vehicle uses an inner annular module that can be incorporated into a wheel. The inner annular module has a open central region, attachment points for steel spokes in tension that radiate out from the annular module, and a feature to facilitate the detachable attachment of a hub by a user, so that a user detachable hub can be installed in the open central region when the annular module is used as part of a vehicle wheel. Removal of the hub facilitates the placement of the module over the axle of a second wheel. The attachment points for the spokes that radiate outward are in a circular configuration that is concentric with the center of the annular module. The attachment points for the spokes are on two parallel planes.