The ADAC, officially the Allgemeiner Deutscher Automobil-Club (lit. 'General German Automobile Club'), is Europe's largest automobile association. The ADAC is the largest verein (club) in Germany, with around 21 million members. Its headquarters are located in Munich. Its original and most well-known service is roadside assistance. The objective of the ADAC is "the representation, promotion, and advocacy of motoring, motorsport, and tourism interests." The ADAC also owns subsidiaries in the insurance and publishing sectors. These subsidiaries all operate under ADAC Beteiligungs- und Wirtschaftsdienst GmbH, which assumes the holding function. Via its subsidiary ADAC Luftrettung (lit. 'ADAC Air Rescue'), the ADAC operates the largest fleet of ambulance helicopters in Germany. ()