When I was growing up I rode dirt bikes and street/trail bikes. All the roads around here were chert and our farm was surrounded in hundreds of acres of potato fields with enough room at the edge of the fields for horse/motorcycle/go cart trails. My younger brother was too young to really hold up a bike....so my Dad fixed up an old go cart frame and put a briggs/stratton motor from a rotor tiller on it. Put the gas throttle on the steering column and used an old leather belt as a brake....it was an accident waiting to happen....and it was about as much fun as you could have with your clothes on.

Had a friend I rode dirt bikes with a lot. His Dad would buy him anything he wanted, always had a nice bike. After the first time he drove that go cart, anytime he'd come to ride, he'd park his bike and drive that go cart.