Cairo, the capital city of Egypt, has a lot of traffic. Commuters often find themselves stuck in a traffic jam, unable to move.

One book store came up with an ingenious program to help the people who take taxis in the city. They call it, “The Taxi of Knowledge.”

Alef Books gives taxi drivers five free books, which they can place in the back seat of their cab.

Passengers can read a good book while they’re stuck in traffic.

The taxi driver gets to choose which books he wants. He can also trade them in whenever he wants, for different books.