Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. A gear stick is the lever used to change gear in a vehicle, such as an automobile, with manual transmission or several common forms of automatic transmission. The device is used to change gear; in a manual transmission vehicle this will normally be done whilst depressing the clutch pedal with the left foot to disengage the engine from the drivetrain and wheels. Automatic transmission vehicles, robotised manuals, and those with continuously variable transmission gearboxes, do not require a clutch pedal.