An elderly man, tired from riding his bike into town, decides to hitch hike instead.  When a man in a little red corvette pulls up to give him a ride, the old man grabs his bike from behind a tree.  "I don't have room for your bike in my car" the man says in surprise, "but I've got an idea how I can help you."  "I have a rope behind my seat, I'll tie one end to the rear of my car and the other end to the front of your bike.  You ride your bike, I'll give you this whistle in case I get going too fast, you blow it and I'll slow down."  Things were working out well until this young lady in a bright yellow corvette pulled up alongside and said, "you want to drag?"  Well, off they went 40, 50, 60... mph.  A traffic cop sitting on the side of the highway can't believe his eyes, he radios ahead because he isn't sure he can stop them.  "I've got two vettes doing 100 miles an hour in a 35 mile zone, and get this, there's some old guy on a bike, blowing a whistle trying to pass both of them!