A lot slower than I remembered. We were thinking that they turned down the governors on them or, that they're old worn out engines and wont go any more. Seems like the timer wasn't working the last time I was there a couple years ago. Maybe that's the norm.
I did remember that there's a kart track a few miles from me on SR674. It's a 1/4 mile dirt oval but I think they do have a rental kind of thing going. I might drive by there tomorrow and check it out.