I have on old mini bike that was made into a chopper, not very sucessfully. I will make a go cart using the front end of a riding mower I found free on Craigs list. I'll mate the 2 togeather and use a 5HP B&S to power it. The 10HP tec. looks like it can be made to run without much effort, but it's a bit too powerful for this aplication.
If not something like this it should make a good push trailer with some work.