A man decided that he was going to ride a 10 speed bike from
 Phoenix to Flagstaff.  He got as far as Black Canyon City before the
 mountains just became too much and he could go no farther. He stuck
 his thumb out but after 3 hours, hadn't gotten a single person to stop.
 
 Finally a guy in a Corvette pulled over and offered him a ride.  Of
 course, the bike wouldn't fit in the car.  The owner of the Corvette
 found a piece of rope lying by the highway and tied it to his bumper. 
 He tied the other end to the bike and told the man that if he got to 
 going too fast, to honk the horn on his bike and that he would slow down.
 
 Everything went fine for the first 30 miles.  Suddenly, another
 Corvette blew past them.  Not to be out done, the Corvette pulling the
 bike took off after the other.  A short distance down the road,
 the Corvettes, both going well over 120 mph, blew through a speed
 trap. 
  
 The police officer noted the speeds from his radar gun and radioed to the
 other officer that he had 2 Corvettes headed his way at over 120 mph.
 He then relayed, "and your not going to believe this, there's a guy
 on a 10 speed bike honking to pass."

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