The name Autostick has been used for a Volkswagen semi-automatic transmission, which was a vacuum-operated automatic clutch system, coupled with a conventional 3-speed manual transmission. The "AutoStick" system designed by Chrysler allows for manual selection of gears with a standard hydraulic automatic transmission, also known as a manumatic. Similar systems have been offered and are marketed by other automakers. The Autostick systems used by Volkswagen and Chrysler are largely unrelated, are not mechanically similar in their operation, and do not share any similarities with their internal design and build.