OK, what is it?

Mini Bike & Go-Kart Parts

How many of you have a nice chariot such as this? LOL I bought this today dirt cheap and it's really a nice built machine. The engine is a 2.5hp, and appears to be made for this application. I don't think even a 3hp harbor freight would fit. It has a copper fuel tank, and cheng shin tires (the rears made in Italy). I don't think it's a one off, but don't see any tags or info. Can anyone help? For $125 I didnt get hurt.