The MF 2000 (officially called the MF 01) is a model of steel-wheeled electrical multiple units used on Paris's Metro system. The cars first arrived in December 2007 and delivery will be completed by 2015. RATP ordered 160 trains or 800 cars in 2001, to replace the aging MF 67. It is used on Line 2, Line 5, and Line 9.The MF 01 was first introduced to the press on June 17, 2005, but it would not be until January, 2006 that the first trains would undergo testing on the system.