The Razor Ground Force Elite electric go-kart for riders up to 200 lb. has just been launched, ... Compare that to Segway’s adult-sized electric go-kart that launched at between 3-4x this price.

Kart the Park puts kids (ages 8-13) and teens/adults (13 and older) behind the wheel of go-karts on a half-mile paved track that features numerous turns and elevation changes.

Starting last fall, I set out to design and build a decent adult go-kart that anyone can assemble with basic tools at home for under $1,000. And ideally, I’d get it closer to $500.

They offer a standard adult GT5 go-kart and junior go-karts, as well as “high-performance” karts you can drive if you are qualified — you must be at least 58 inches tall and have completed ...