There are 40 titles on display in the cab, all in Farsi. One of the favorites, Sarvebaz said, is George Orwell's Animal Farm.
"We just want to tell everyone that individuals can make effort to make the world a better place to live for everyone and we shouldn't judge each other according to the cover," said Sarvebaz.
The couple sell 30 titles a day. They met at a bookstore and plan to open one with a cafe and reading area. They have also started writing their own books in Farsi.