Go Kart?

Alright guys so we recently got a Honda Rubicon to ride around the ranch and we have been looking into investing in another but the problem is that I haven’t found a decent one in my area with a price range of 3k-3.5k. Well I came up with the idea that a go kart wouldn’t be so bad. We currently drive the atv with my nephews which are all around 10 years old and I feel like getting a go kart will be a bit safer for them. My question for you guys is do you guys know of a go kart that is reliable? I know this is a honda atv forum but I just thought it would be worth it to ask. Is there one that could possibly come close to keeping up with the rubicon around the price range I’m looking for? Thanks