The 7000 Series cars were the first Madrid Metro cars ever not built by a Spanish manufacturer. They were also the first cars to come with articulated joints allowing for unobstructed passage through an entire 6 car train (the 6000 Series was the first train to have articulated joints between the cars, but the cars were still in married pairs). Additional features include interior TV screens that could display information, but these are not currently used for any purpose. The 7000 Series cars can be found on Line 10 and also at times on Line 6.