A cargo storage and support system and method is provided for use in a vehicle which includes a substantially planar storage body made of a collapsible material and having a first edge and a second edge substantially parallel to the first edge, at least one collapsible storage area formed within the substantially planar storage body and at least one attachment structure formed adjacent the first edge and the second edge of the storage body for attachment to a vehicle body. The storage body is maintained in tension when in use so that it can carry a load. The storage areas are formed within the storage body and can be accessed from a top surface of the storage body and are collapsible. The storage body can also be removed from the vehicle for pre-loading or if it is not being used. Attachment structures formed adjacent the storage body mate with receiving structures formed on a vehicle so that the storage body is maintained in tension.