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The first section at western Kurfürstendamm was opened in 1958. According to the concept of a "car-friendly" city, the A 100 then indeed was intended to become a ring road, but by now a completion of the ring as an autobahn is no longer proposed. It is nonetheless still often called Stadtring ("city ring"). The section between the Funkturm and Kurfürstendamm interchanges is busiest autobahn in Germany with an average of 191, 400 vehicles per day. Recently a planned southeastern extension to Sonnenallee and Treptower Park has been the cause for various protests.