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German Formula One driver Nico Huelkenberg of Sauber steers his car with attached measuring device during the first practice session at the Nuerburgring race track, Nuerburg, Germany, 05 July 2013. The Formula One Grand Prix of Germany will take place on 7th of July 2013. Photo: David Ebener/dpa +++(c) dpa - Bildfunk+++ (KEYSTONE/DPA/David Ebener)