71.   Non-Americans who want to see the world from the top down are inclined to hitch a ride with us.

72.   On the way home he hitched a ride in a Volkswagen bus.

73.   One family, with a rowboat of their own, was in no hurry to hitch a ride.

74.   Others hitched a ride.

75.   Patricia Gadsby, a contributing editor of Discover magazine, reports on how bugs, drugs and grime hitch a ride on the back of every buck.

76.   Other times, he hitched a ride with a mail truck.

77.   Poole hitched a ride with the husband of Broncos scouting assistant Pam Papsdorf, who was in town visiting family.

78.   Primitive bacteria could have hitched a ride on rock fragments crossing interplanetary space and seeded life on Earth, he says.

79.   Rioters and soldiers mingled easily with each other, and late in the day, teen-agers were hitching rides on troop transports.

80.   Recent discoveries of Martian meteorites that have reached Earth have raised the possibility that bacterial spores could have hitched a ride on these rocks.