Police officers investigate wrecked luxury cars at the site of a traffic accident on the Chugoku Expressway in Shimonoseki, southwestern Japan in this Dec 4, 2011 photo taken by Kyodo. Ten people were slightly injured in the pile up involving eight Ferraris, a Lamborghini, two Mercedes-Benz and two Japanese cars, according to the police. A group of luxury sports car fans were believed to be driving together when the accident occurred, local media reported. [Photo/Agencies]