"The ADAC (Allgemeiner Deutscher Automobil-Club e.V., meaning General German Automobile Club) is an automobile association in Germany, founded on May 24, 1903, as German Motorbiker Association ...
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(Deutsche Motorradfahrer-Vereinigung), and given its present name in 1911.
With more than 18 million members in May 2012, it is the largest automobile club in Europe. It is also the largest motorcyclist association in the world, with 1.5 million members." - (en.wikipedia.org 30.01.2020)