Santa Cruz Nomad Bike company is demonstrating how to install a bike.  The company representative is putting together the bike parts piece by piece.  He starts with the main body and then goes to attach the wheels, the handle and the pedals.  Then he goes ahead and attaches the rubber tires.  After that he fixes the handles of the bike with black rubber tops.  He finally reinforces all the parts and ensures the bike is ready for use.  when he's done, he gets on the bike and rides it.