Prince Henry of Prussia (1862–1929) became the club's patron. Henry was interested in motor cars as well and supposedly invented a windshield wiper and, according to other sources, the car horn. In his honor, the "Prinz-Heinrich-Fahrt" (Prince Heinrich Tour) was established in 1908, like the earlier Kaiserpreis a precursor to the German Grand Prix. Henry and his brother William gave patronage to the Kaiserlicher Automobilclub (Imperial Automobile Club). Henry also was an early proponent of introducing submarines and airplanes. He had merchant ships converted into seaplane tenders for operations in the Baltic Sea. Henry respected his brother, but this attitude was not returned in the
Prince Augustus William of Prussia Prince Augustus William of Prussia Augustus William of Prussia (German: "August Wilhelm"; 9 August 1722 – 12 June 1758) was Prince of Prussia and a younger brother and general of Frederick II. Augustus was the second surviving son of Frederick William I and Sophia Dorothea. His older siblings included Wilhelmina (later Margravine of Bayreuth), Frederick II (later King of Prussia), Friedrike Louise (later Margravine of Ansbach) and Louisa Ulrika (later Queen of Sweden). Augustus was favored by his father over Frederick and popular at the Prussian court. When his brother Frederick became king in 1740, Augustus became heir presumptive and