Various ridable karts for users are described. The ridable kart can include a kart body, a cover body, a rear caster wheel, a steering assembly, a battery, and a controller. The kart body can include an installation slot. The controller and the battery can be secured within the installation slot. The steering assembly can include a front wheel and a steering wheel. The front wheel can include a hub motor arrangement.

A strengthening member for a vehicle, a vehicle including a strengthening member, and a method of making a strengthening member for a vehicle is provided. The strengthening member can have a twelve-cornered cross section that includes sides and corners. The sides can include eight straight sides and four curved sides. A length of each straight side can be substantially the same, a radius of a curvature of each curved side can be substantially the same, and a ratio of the straight side length to the curvature radius may range from about 0.9 to about 1.6. In a motor vehicle, length of each straight side of the cross section of the strengthening member can range from about 10 mm to about 200 mm and the radius of the curvature of each curved side of the cross section of the strengthening member can range from about 3 mm to about 400 mm.

There are provided a floor panel, a tunnel portion which is provided to protrude at the floor panel, a pair of right-and-left tunnel side frames, a pair of right-and-left floor frames, and a band plate which is made from carbon fiber reinforced plastic, an inward end portion which being connected to the tunnel side frame and an outward end portion of which being connected to the floor frame, wherein the band plate portion includes a first displacement following portion which is configured to be displaced, following displacement of the tunnel side frame and a second displacement following portion which is configured to be displaced, following displacement of the floor frame, and the first displacement following portion and the second displacement following portion are configured to be asymmetrical relatively to a longitudinal-directional axis.

Various ridable karts for users are described. The ridable kart can include a kart body, a cover body, a rear caster wheel, a steering assembly, a battery, and a controller. The kart body can include an installation slot. The controller and the battery can be secured within the installation slot. The steering assembly can include a front wheel and a steering wheel. The front wheel can include a hub motor arrangement.

In certain embodiments, land vehicles are provided as delivery vehicles and/or utility vehicles. A land vehicle includes a frame structure having a front cage that defines an operator cabin and a rear floor positioned rearward of the front cage. The frame structure supports a plurality of wheels to permit movement of the vehicle relative to an underlying surface in use of the land vehicle. An underside of the frame structure is disposed in confronting relation with the underlying surface.

A structural component for a vehicle and a process and system for forming the structural component. A first cavity is formed in a first hollow passage between a first bladder and an interior surface of a component forming the structural component. A first structural reinforcement layer is formed in the first cavity by filling the first cavity with a first polymer resin and foaming the first polymer resin to form a first polymer resin foam. A second cavity is formed in the first hollow passage and a second structural reinforcement layer is formed in the second cavity by filling the second cavity with a second polymer resin and foaming the second polymer resin to form a second polymer resin foam.

A trailer (50, 60) has a chassis (1) which is fabricated from sheet plastics material. The chassis (1) is hollow and substantially planar and has an upper sheet (6) and lower sheet (10) separated by a peripheral wall (12). The shape of the chassis is generally dart like being formed by a forward triangle 3 and a rear rectangle (4). The sheet plastics material is preferably high density polyethylene which is 16 mm thick.

A vehicle body includes a roof panel and a first bodyside panel. The roof panel includes first and second side regions. The first bodyside panel includes top and bottom regions. The roof panel and first bodyside panel define a continuous exterior surface region. The continuous exterior surface region extends from the first side region of the roof panel to the bottom region of the first bodyside panel through the second side region of the roof panel and top region of the first bodyside panel.

A strengthening member for a vehicle, a vehicle including a strengthening member, and a method of making a strengthening member for a vehicle is provided. The strengthening member can have a twelve-cornered cross section that includes sides and corners. The sides can include eight straight sides and four curved sides. A length of each straight side can be substantially the same, a radius of a curvature of each curved side can be substantially the same, and a ratio of the straight side length to the curvature radius may range from about 0.9 to about 1.6. In a motor vehicle, length of each straight side of the cross section of the strengthening member can range from about 10 mm to about 200 mm and the radius of the curvature of each curved side of the cross section of the strengthening member can range from about 3 mm to about 400 mm.

A trailer (50, 60) has a chassis (1) which is fabricated from sheet plastics material. The chassis (1) is hollow and substantially planar and has an upper sheet (6) and lower sheet (10) separated by a peripheral wall (12). The shape of the chassis is generally dart like being formed by a forward triangle 3 and a rear rectangle (4). The sheet plastics material is preferably high density polyethylene which is 16 mm thick.