The steepest Alpine road in Europe at times, with a gradient of up to 34% at kilometre 60 (reckoned from Klagenfurt), was also sometimes a test stretch of the automobile manufacturer, Porsche, produced after the Second World War in nearby Gmünd in Carinthia, because of its high demands on automobiles. In January 1978, Audi presented the newly developed Audi Quattro to the company leadership on the Turracher Höhe, where the performance of the new all-wheel drive could be convincingly demonstrated on the steep, curvy and snowy road of the pass.