Human-Powered Freerunning Machine...

[http://youtu.be/4MiYtvbK4JY] (YouTube link)Take a Rube Goldberg contraption and replacec some moving parts with free runners. Parkour power! The result is awesome to watch, but you have to wonder if these guys will ever...

http://www.neatorama.com/2012/10/04/Human-Powered-Freerunning-Machine/