WiTHiN seems to be alternatively like a large enclosed sea kayak, and is also propelled by a leg-powered generate device. That device consists of a set of pedals Situated inside the cockpit, that spin an exterior two-bladed propeller by means of a shaft drive. At 80 rpm, Kolodziejzyk has taken it nearly a velocity of 3.7 knots.MirageDrive 360 would