Here is a cool kit that turns your hoverboard into a fun go-kart. The Hyper Gogo is compatible with almost all hoverboards on the market. It has an extendable frame in width and height to accommodate kids and adults.
The GoKart Kit by HyperGoGo has max load capacity of 90kg. Attaching it is easy too: Simply tie up the hoverboard with hook and loop fasteners.