The bookshelves under the stairs

I found this on the internet. I know it is silly, I know it is photoshopped, but right now we are looking to buy and assemble storage spaces, particularly for books (mine and Wolfie's) and I look at it and think it would be an interesting solution, if it existed. Give a double function to our stairway and it would also look oh so cool. And it would optimize the space. Anybody has seen anything resembling this in real life?