I played the vid on this site and this is interesting. Kind of like the Blackburn Ultra trainer. If they ever get this light enough and with a wide enough range it will catch on. I liked the fact that the rider still controls the position of the power trasfer(the auto shift schemes just do not work that well). Electronic shifting and even more choices in frame materials will be the rage. Unless stronger materials are found, 10 speed is the limit although everyone will try to sell you a 12 speed or whatever.