Go-karts are a lot of fun to race, and some are even faster than motorcycles.
Faster than motorcycles?  That is crazy.  Where would you race them?
Well the fast ones known as Superkarts would be raced on long circuits.
Are those go carts expensive?  How do you get one?
six-speed sequential gearboxes. Owing to their high top speed and superb cornering ability, a Superkart's aerodynamic bodywork includes a front fairing, larger sidepods, and a rear wing. They use either tires and wheels and most often race on full size auto-racing circuits.
250 cc Superkarts often set faster lap times than much more expensive and technically advanced racing machines. Some British and Australian classes also include 125 cc gearbox karts.
Superkarts race on "long circuits" (e.g. Silverstone, Laguna Seca, Magny
Go-kart
A go-kart, also written as go-cart (often referred to as simply a kart), is a type of open-wheel car. Go-karts come in all shapes and forms, from motorless models to high-powered racing machines. Some, such as Superkarts, are able to beat racing cars or motorcycles on long circuits.
Gravity racers, usually referred to as Soap Box Derby carts, are the simplest type of go-karts. They are propelled by gravity.