An amazing Kart that is for everyone, moms and dads included. Even grandma and grandpa will enjoy this Kart. For those who don't have the right balance or the right weight to enjoy the ride of a hoverboard or if you are a Go-Karting Enthusiast, you can now sit back and relax. It's an add on to your Smart2 and Smart2HX Series Hoverboards. They are designed to fit all hoverboards, just be sure to wear a helmet!