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?
Well they have two stroke 250 cc engines and are sometimes specially designed with six-speed sequential gearboxes, so probably pretty expensive.
Oh my gosh!  That sounds like so much fun.  Have you ever raced?
Listen, I have raced, but I'm not very good. I only race the "slow" ones and I still always run into the walls!
Fun!  You can't really hurt youself though, right?
No more dangerous than normal cars probably. In some countries, you can license a go-kart for public roads.
Now that would be scary!  It would be really hard for cars to see you I imagine!