He had some good results, and was one of the first German Grand Prix-drivers when his Mercedes team (with Camille Jenatzy and Victor Hémery) joined the 1907 French Grand Prix. Salzer continued in the 1908 French Grand Prix (with Christian Lautenschlager and Willy Pöge, driving a 140 HP Mercedes), 1914 French Grand Prix (with Louis Wagner), 1906 Circuit des Ardennes, and was also present the 1922 Italian Grand Prix.