 In 1914 in Sarajevo, the Archduke Franz Ferdinand of Austria and his wife rode together with Harrach in this car, when Gavrilo Princip assassinated the Archduke.The assassination provoked a series of diplomatic manoeuvres that quickly led to declarations of war and the onset of the First World War.As the war broke out, Gräf & Stift started manufacturing trucks in order to meet wartime demand, which, together with buses and special vehicles, became the company's main business and enabled it to flourish in a rather difficult time.