"Yo, I herd you like bikes, so I put a treadmill on your bike so you can walk while you ride." Now it just needs a bike mounted on the treadmill so you can ride while you ride. - http://www.gizmag.com/treadmi...
"Not too dissimilar to the Rollator we featured late last year on Gizmag is the Treadmill Bike, which leaves as much to the imagination as the movie: Snakes on a Plane. Unlike the Rollator, the Treadmill Bike has only two wheels, looks a little more robust and lets you take it “off road” according to its designers, though why you wouldn’t just go for a jog has got us puzzled." - Kurt Starnes