Have one of those self-balancing, two-wheeled hoverboards? The HyperGoGo transforms any hoverboard into into a working go kart. It adds an adjustable chassis, racing seat, steering wheel, lever control, shocks, front wheels, and disc brakes. Since it folds down small you can even fit it in your car trunk.
The HoverSeat is a frame that you can attach to hoverboards with a 6″ or 10″ wheelbase, turning the toy into a four-wheeled vehicle. It can haul up to 250lb, works with any beach chair, and is easy to disassemble. You can even attach a second HoverSeat to tow a passenger.