These book vending machines are a nice alternative to the ones that just sell junk food. I have no idea whether they actually make many sales. This one is at the Principe Pio train station in Madrid. There are also a bunch of small libraries in a few of the Madrid metro stations where people can check out books for the commute.
Grave Error 
While they sound like good in concept, libraries don’t make much sense. Governments especially should get out of the library business.
I wonder how long these book vending machines will last. With kindle alternatives, perhaps this photo will be something our grandchildren are amazed existed.