The one pic just kinda sucks for informational purposes.
It doesn't really matter what it is though, only that you like it. It better be dirt cheap too, like $20 tops. Personally, I'd pass.
EDIT--When searching craigslist, Letgo, OfferUp, Failbook Marketplace, etc., remember to use these search terms to get the maximum number of results:
Gokart
Go kart
Go-kart
Gocart
Go cart
Go-cart
Yes, spaces and dashes mean a lot. Might find something with it misspelled, like "go crat" or go krat" too, people are careless.