Police officers investigate wrecked luxury cars at the site of a traffic accident on the Chugoku Expressway in Shimonoseki, southwestern Japan in this December 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. Picture taken December 4, 2011. Mandatory Credit REUTERS/Kyodo (JAPAN – Tags: TRANSPORT DISASTER SOCIETY WEALTH) JAPAN OUT. NO COMMERCIAL OR EDITORIAL SALES IN JAPAN. FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS. THIS IMAGE HAS BEEN SUPPLIED BY A THIRD PARTY. IT IS DISTRIBUTED, EXACTLY AS RECEIVED BY REUTERS, AS A SERVICE TO CLIENTS. MANDATORY CREDIT. YES