A passenger car that has a function of being able to partially or fully drive, not in accordance with driver's intentions, includes a grip that is provided independent of an operation system of the passenger car and is configured to receive driver's operating intentions according to operation of the driver, and a control unit that is configured to determine whether a driver's operating intention has been changed to another intention via the grip and to determine, when the operating intention has been changed, whether to give an operating initiative to the driver.