Tucked down an alley in Stuttgart, Germany, is an unmarked gray warehouse ... controlled facility is a storage area for the Porsche Museum that is located a meandering 10-minute walk away.

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

Incredible pilot skill is also involved with this display, but short of a trip to Germany for a personalized tour, we aren't sure there's a better way to see the Porsche Museum. Source ...

"The Porsche Effect" is set to run through January 2019. For more details on visiting the museum visit ... Its "K" designation refers to Germany's Kremer Racing, a shop that modified and developed ...