BERLIN - JANUARY 07: A sign marks the beginning of the "environment zone" January 7, 2008 in Berlin, Germany. Starting January 1 German authorities established environment zones in Berlin, Hanover and Cologne that only allow cars to enter that have a special sticker indicating the car's partical emissions are at an acceptable level. In Berlin police will issue warnings to drivers without the stickers until the end of January, afterwards drivers will face a EUR 40 fine. (Photo by Sean Gallup/Getty Images)
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Getty Images News Sean Gallup