Vietnam/Us Bike Ride -- Host Bob Edwards talks with commentator Diana Nyad [NIGH-ad] about the Vietnam Challenge Team's 1400-mile bike trip from Hanoi to Ho Chi Minh City. She is among 55 riders, including former Tour de France winner Greg LeMond and Vietnam veterans. The trip was organized to foster better relations between the U-S and Vietnam. The cyclists will ride eight to ten hours a day. To complete the planned two week trip, the riders will have to cover about 100 miles a day.