Having trouble selling your clunkers? See Dr. Jekyll (his name is on the mailbox). He has concocted a potion that he pours in the gas tank, changing clunkers into race cars. In this rather twisted tale, Dr. Jekyll feeds his evil potion to himself and his car- turning both man and machine into Mr. Hyde and a monster machine. The Pink Panther buys the car for $25, unaware of its dual personality. All is well until it roars past a cop hidden behind a “Drink Peppy” sign.