For the first time in its glorious 89-year history, German automaker Porsche has published ‘Porsche Unseen’, a revelation of several unreleased concept cars for all the world to see. The collection uncovers 15 concept cars from the Porsche Design Studio created between 2005 to 2019.

“People all over the world love the timeless and innovative design of our sports cars,” said Oliver Blume, Chairman of the Executive Board at Porsche AG. 
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https://www.slashgear.com/porsche-unseen-reveals-what-could-have-been-for-the-german-carmaker-16647362/