A hatch door, which comprises a rear spoiler and a side spoiler, which are fixedly connected to a base structure of the hatch door, wherein it is provided according to the invention that the rear spoiler is additionally disposed mechanically reversibly secured with respect to the side spoiler and vice versa by a mechanical connection.

A trailer includes a housing including an internal frame and an external frame. The external frame is coupled to the internal frame. In certain embodiments, the internal frame is positioned between interior panels and exterior panels of the housing. In certain embodiments, the external frame is spaced from exterior panels.

A trailer includes a housing including an internal frame and an external frame. The external frame is coupled to the internal frame. In certain embodiments, the internal frame is positioned between interior panels and exterior panels of the housing. In certain embodiments, the external frame is spaced from exterior panels.

A vehicle body includes: side sills coupled to opposite sides of the vehicle body in a forward-rearward longitudinal direction of the vehicle body, rear lower members coupled between the side sills and front side members, and a lower bar coupled to the side sills while being coupled to the rear lower members in a lateral direction of the vehicle body.

A vehicle body includes: side sills coupled to opposite sides of the vehicle body in a forward-rearward longitudinal direction of the vehicle body, rear lower members coupled between the side sills and front side members, and a lower bar coupled to the side sills while being coupled to the rear lower members in a lateral direction of the vehicle body.

An automotive hydrogen storage tank support system for a vehicle includes: a floor; a pair of side sills mounted on lateral edges of the floor, respectively; and a support frame mounted on the floor and supporting a hydrogen storage tank The support frame includes a pair of longitudinal members, and a plurality of transverse members connecting the pair of longitudinal members to each other, at least one transverse member among the plurality of transverse members has a pair of extension portions respectively extending from opposite ends thereof toward the pair of side sills, and each extension portion is joined to a corresponding side sill of the pair of side sills.

An automotive hydrogen storage tank support system for a vehicle includes: a floor; a pair of side sills mounted on lateral edges of the floor, respectively; and a support frame mounted on the floor and supporting a hydrogen storage tank The support frame includes a pair of longitudinal members, and a plurality of transverse members connecting the pair of longitudinal members to each other, at least one transverse member among the plurality of transverse members has a pair of extension portions respectively extending from opposite ends thereof toward the pair of side sills, and each extension portion is joined to a corresponding side sill of the pair of side sills.

One variation may include using a plurality of node structures to assemble a uniframe.

One variation may include using a plurality of node structures to assemble a uniframe.

A trailer includes a housing including an internal frame and an external frame. The external frame is coupled to the internal frame. In certain embodiments, the internal frame is positioned between interior panels and exterior panels of the housing. In certain embodiments, the external frame is spaced from exterior panels.