September 1931
5 September
The Court of International Justice in The Hague rules 8:7 against the customs union between Austria and Germany. Two days earlier German Foreign Minister Curtius and his Austrian counterpart had already declared they were willing to forgo the German-Austrian customs union.
[Büttner, p. 428]
28 September
Automobile engineer Ferdinand Porsche and Fritz Neumeyer, head of Zündapp-Werke, agree to build a “Volkswagen”.
[Etzold, p. 75]