Miguel and Robin attach a speedometer on a bicycle so they and Paco can see how fast Paco can really ride his bike.

Jackie meets with MIT engineers who built a streamlined bicycle, the longest in the wirld.

ANIMATION: Laminar flow.

At Miguel's house, Kathy tells Robin about the odometer on a bicycle. They decide one of them rides 2,000 miles a year on a bicycle.

FILM INSERT: Streamlining isn't the only thing that lowers air resistance in high-speed travel.

Robin and Kathy find the hole in Kathy's flat tire by putting the tire in a tub full of water.

Miguel talks to Diane Green, a champion windsurfer, about sailboards. Green builds a sailboard herself and gets Miguel on another sailboard (temporarily).

FILM INSERT: The streamlined shape of salmon and other fish, beavers, penguins, and dolphins.

Robin and Kathy patch up the tire and test it in the tub.

THE BLOODHOUND GANG: ""The Case of X Marks the Spot, Part One."" Vikki is entered in a village's ten-mile race. One of the runners, tho