I finished a first print of an automobile document on North Korea. It is called "Automobiles Made in North Korea", it includes buses, trolleybuses, dumpers, trucks, cross country vehicles and passenger vehicles. It has about 325 photos and 107 pages.
But it is a first try. I need more help, and I know that in China (especially in Liaoning province) there is a lot of information about the DPRK Motor Industry. Is there anyone who can help me?
More about the book you can find at http://www.chinesecars.net/index.php?page=4.