1939 Pontiac Deluxe Six Ghost car is not usually the vehicle. While all cars made of metal, Pontiac decided to try something new with this car. The company decided that instead of metal material use an innovation at the time, called plexiglass. Whole body shell is made of Plexiglas. Due to the transparent plexiglass, all the internal parts can be seen. Therefore, this car is named “Ghost”. The car cost $ 25,000 to build, which was a huge sum of money compared to the price of a new Pontiac at the time – $ 700. In 2011, the car was sold at auction for $ 308,000.