The 2000-series was a series of Chicago "L" car built in 1964 by Pullman-Standard of Chicago, Illinois. 180 cars were built. The 2000-series was the first of five series of Chicago "L" cars known as the High-Performance Family. Delivered to the CTA in 1964, they were built as married-pair sets, like the PCC-based 6000-series cars before them. The 2000-series, along with the High-Performance Family in general, were meant as both as a supplement for the 6000-series cars (which were built from discontinued PCC streetcar components) and a replacement for the aging 4000-series cars dating from the early 20th century. The CTA also needed a train car that would meet more modern demands for train service, such as higher speeds and more comfortable interiors.