Mercedes-Benz has done lots of business with the North Koreans since the late 1970s, resulting in a lot of sedans, particularly W140s, serving as the car of choice for the elite. In fact, the North Koreans were so enamored with the Mercedes-Benz 190 that they actually built a copies of it called the Kaengsaeng 88, Paektusan and Pyongyang 410 (or 4.10). These were built in 1988 in very small numbers, and according to defectors, lacked a heater, air conditioner, and had mismatched windows. You can find a picture of it here:

http://www.leblogauto.com/2007/07/mercedes-made-in-north-korea.html