I think this machine is designed for amusement rather than serious transport. There is only one gear ratio, and it is a very low one. More complicated than a unicycle, and probably not as much fun.
That's something different and suppose you dont know your left from your right? also i wonder if that rider has ever tried to overtake his front wheel.
not impressed. the tonaro bighit does exactly that when the bolt securing the rear arm suspension fork becomes loose. may lead you down tracks hitherto unknown to man!