An old man on a Moped, looking about 100 years old, pulls up next to a doctor at a street light. The old man looks over at the sleek shiny car and asks, "What kind of car ya got there, sonny?" The doctor replies, "A Ferrari GTO. It cost half a million dollars!" "That's a lot of money," says the old man. "Why does it cost so much?" "Because this car can do up to 320 miles an hour!" states the doctor proudly. The Moped driver asks, "Mind if I take a look inside?" "No problem," replies the doctor. So the old man pokes his head in the window and looks around. Then, sitting back on his Moped, the old man says, "That's a pretty nice car, all right... but I'll stick with my Moped!" Just then the light changes, so the doctor decides to show the old man just what his car can do. He floors it, and within 30 seconds the speedometer reads 160 mph. Suddenly, he notices a d...