Lords of Finance by Liaquat Ahamed (pg. 42)

According to one police report, “The Paris banking house of Mendelssohn is trying to send a hundred million francs, in gold, across Germany to Russia.” The hunt for “gold cars” became a curious obsession in the countryside; vehicles driven by innocent Germans were accosted by armed peasants and gamekeepers. A German countess and a duchess were even shot by accident.