The C-100 is an automated people mover rolling stock first developed by Westinghouse Transportation Systems, which later became AEG-Westinghouse, AEG Transportation, and eventually Adtranz. A pioneer in the development of automated guideway transit, it was succeeded by Bombardier Transportation's CX-100, which is found at many airports today. The newer CX-100 is capable of using most of the existing infrastructure of the C-100, making it easy to upgrade to the newer vehicles. Because of this, production of the C-100 ceased upon Bombardier's acquisition of Adtranz in 2000.