The driver, Nikola Knežević and his assistant Stjepan Varga, were both exhausted, both of them having worked for two full days.
運転士のニコラ・クネジェヴィッチ（Nikola Knežević）と助手のスチェパン・ヴァルガ（Stjepan Varga）は両者とも2日間ずっと働いていたためどちらも疲れ果てていた。