German court rules cities may ban older diesel vehicles to cut air pollution

Exhaust emissions from tailpipe [photo: Simone Ramella, 2005, used under Creative Commons 2.0]That huge intake of breath you may have heard from across the Atlantic Ocean was the sound of German carmakers gasping at a court decision handed down on Tuesday. After a week's delay in issuing its ruling, a German court decided that individual cities in the country may ban vehicles with diesel engines to reduce air pollution. The decision could...