One fast moped

[$parechange]

An elderly 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 dot in his rear view mirror. It seems to be getting closer !
>
> He slows down to see what it could be
> And suddenly WHOOOOSSSHHH !
>
> Something whips by him going much faster !
>
> ' What on earth could be going faster than my Ferrari ?' the doctor asks himself.
>
> He presses harder on the accelerator
> And takes the Ferrari up to 250 mph.
>
> Then, up ahead of him,
> He sees that it's the old man on the Moped !
>
> Amazed that the Moped could pass his Ferrari , he gives it more gas
> And passes the Moped at 275 mph
> And he's feeling pretty good until he looks in his mirror and sees the old man gaining on him AGAIN !
>
> Astounded by the speed of this old guy,
> He floors the gas pedal and takes the Ferrari all the way up to 320 mph.
>
> Not ten seconds later, he sees the Moped bearing down on him again !
> The Ferrari is flat out,
> And there's nothing he can do !
>
> Suddenly, the Moped plows
> Into the back of his Ferrari,
> Demolishing the rear end.
>
> The doctor stops and jumps out and unbelievably the old man is still alive.
>
> He runs up to the banged-up old guy and says, ' I'm a doctor.... Is there anything I can do for you ?'
>
> The old man whispers,
> ' Unhook my suspenders from your side view mirror! '