such as the Porsche Museum in Stuttgart and the private Seinfeld Collection. However, this secret Porsche facility is the biggest and most exclusive collection in the world. Some of these special ...

Not only have you never heard of it, it never even saw daylight - and it's unlike any Porsche you can imagine.

There may be no hotter marque than Porsche at the moment ... the Petersen Automotive Museum in Los Angeles announced its newest exhibition would highlight the Stuttgart automaker.

Porsche then relocated to a factory in Germany, where steel bodies replaced ... racers and hot-rodders began customizing the little cars from Stuttgart to improve both style and performance.