The GMC van (van001a as it is mentioned in texture files and scripted events) is a vehicle cut from Half-Life 2. It was apparently to be used by the Citizen transportation in City 17 and maybe by Combine transportation. The GMC van is a full-sized van which was very popular in the United States during the 1970's and 1980's. It was to be used in the old american concept ( 2000-2002 ) of City 17.