General Motors designer Harley Earl is credited with inventing the concept car or also known as the show car. He also did a lot to make the Motorama shows extremely popular in 1950s.
Generally, these pontiac concept cars rarely go into production; most go through so many changes before the design is finalized, that finally, in the interst of keeping the costs donw, the concept car is not produced at all.
Pontiac concepts use exotic and expensive parts and metals, not suitable for car mass-production.
