For years a timed descent had no place in the streets of Lausanne, especially on the famous track of the Valley of Youth, (Vallée de la Jeunesse) whose first edition dates 1976 (Skate-Rollers) and saw up to 100,000 spectators at "contest" before. Here is the footage shot during practice of Saturday, September 3, 2011, a "mix" of different disciplines (Longboard, skateboard, roller skates, inline, quad, scooter, streetluge, Buttboard, skullboard, streetsurf, waveboard) with music by NERO...