Subway (George Bush Intercontinental Airport)

The Subway (formerly known as the inter-terminal train) is the older of the two separate inter-terminal people movers operating at George Bush Intercontinental Airport (IAH) in Houston, Texas. == Description == Opened in 1969 along with the airport, the train system was replaced in 1981 with the current WEDway system, built by WED Transportation Systems, a division of what is now known as Walt Disney Imagineering.

Source: Wikipedia — Subway (George Bush Intercontinental Airport) (CC BY-SA 4.0)