It's all good until it falls off the jackstands. Or, like when someone is sitting in the cart pressing the pedal and the line snaps and whips the **** out of them.
Someone email seller for his vid then post it up here!
You would have to get another set of wheels and tires because you can't take the tires off and put them back on the wheels in a feild without a bunch of tools.
For $700, if it was in my town, I would drive over to check it out and reserve judgement until then. I see potential issues, but you could work around them...