Iran annually needs some 4,000 buses for its domestic transportation. Since the 1970s, Iran has been producing a number of different buses, such as German Mercedes and MAN as well as Swedish Scania and Volvo that it has exported throughout Asia. Daewoo Bus Corp. and an Iranian automaker "Ardebil Sabalan Khodrow-Maywan" have teamed up to build buses in Iran. The plant, which is slated to be completed by March 2010, would have a production capacity of 2,000 buses per year and would produce some 800 city and intercity buses in the 18 months after its inauguration. Based on the agreement, the engines and gearboxes would be manufactured in South Korea. Production would increasingly shift to Iran, where about 60 percent of the parts would be made.