Porsche has just released a group of concept cars produced since 2005 for the first time. All are intriguing design studies, some of which informed production cars. They’re being released now for their inclusion in a new book about Porsche design called Porsche Unseen.

“People all over the world love the timeless and innovative design of our sports cars,” said Porsche chairman Oliver Blume. “Visionary concept studies are the foundation of this success. They provide the pool of ideas for the Porsche design of tomorrow and combine our strong tradition with trailblazing future technologies.”

Let’s take a closer look at the first three cars to be unveiled:

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