His father was Hugo Markus Ganz (1862–1922) from Mainz in Germany who worked as a political and literary writer and journalist for the Frankfurter Zeitung.
This was a small lightweight car along the lines of the Rumpler Tropfenwagen with a mid-mounted engine, independent wheel suspension, swing-axles and an aerodynamic body.
Lacking the money to build a prototype, he began publishing articles on progressive car design in various magazines and, shortly after his graduation in 1927, he was assigned as the new editor-in-chief of Klein-Motor-Sport.
Post-war Volkswagen director Heinrich Nordhoff later said "Josef Ganz in Motor-Kritik attacked the old and well-established auto companies with biting irony and with the ardent conviction of a missionary.
In 1929, Josef Ganz started contacting German motorcycle manufacturers Zündapp, Ardie and DKW for collaboration to build a prototype, small people's car.
After news about the results achieved with the Ardie-Ganz and Adler Maikäfer prototypes reached Zündapp, the company turned to Ferdinand Porsche in September 1931 to develop an "Auto für Jedermann"—a "car for everyman".
He fled Germany in June 1934 – the month Adolf Hitler assigned Ferdinand Porsche to design a mass-producible auto for a consumer price of 1,000 Reichsmark.
[8] After a short period in Liechtenstein, Josef Ganz settled in Switzerland where with government support he started a Swiss auto project.
[9] For some years he worked there for General Motors – Holden, but suffered ill health after a series of heart attacks in the early 1960s.