. . . "8000 series (Washington Metro)" . "3000-series" . . "1000-Series car" . "recently retired 5000 series railcars" . . "6000-Series car" . "1983" . . "Washington" . "3000-series rail cars" . . "1000-series" . "Washington Metro rolling stock" . . "7000 series" . "5000-Series" . . "newer railcars" . "Washington Metro 7000-Series" . "7000-series" . "2000-series" . "4000-series" . . . "2000-Series" . "76" . . "7000-series cars" . "Washington Metro rolling stock" . "5000-Series car" . "68" . "6000-series" . "1,318 railcars" . "7000-Series" . "Washington_Metro_rolling_stock#7000-series" . "2 six-car trains" . "5000-series" . "Washington Metro 6000-series" . "1 six-car train" . "5000-series cars" . "4000-Series" . "1000 series" . . . . . "3000-Series" . "175" . "4000 Series railcars" . "1000-Series" .