Downhill Ski Vehicle - This fully-functioning beta prototype has proven the technical feasibility of the patented "dual, linked-in-parallel, front steering skis" as an advancement in the state of the art of downhill skibiking. Superior in terms of comfort, stability and dynamic turning performance (i.e., carving), this full suspension version is easy to learn, yet can can perform at the most extreme levels.
http://www.youtube.com/watch?v=DFs8vPEyJfo