O.o . . . . so if you go up a hill, you simply pedal backwards to make it easier :-d awesome!
ok, now we have to find kangaroo bikes, with both pedals at the same time, . . . with excentric wheels (off center) . . . they make unicycles like that you know ; )
i would actually consider the double chain drive though !!! that looks sick, thanks for the pics bakaster!! : D