Some rail cars on Chicago's "L" are so old they got a retirement party.
The Chicago Transit Authority on Thursday offered nostalgic riders a ceremonial last trip on a series of cars built more than 40 years ago.
The agency calls the 2200-series the workhorse of the Blue Line running between downtown and O'Hare International Airport.
The car's boxy look was designed by architectural firm Skidmore, Owings and Merrill to match the route's modernist stations.
Among its distinctive features are the pivoting "blinker" doors.
The CTA is replacing its oldest cars as it upgrades its fleet with more modern equipment.
The eight cars in Thursday's ceremonial were decked out with original exterior decals for their final run. They also featured advertisements from the period when they were first launched.