Say 'bonjour' to the all-new Peugeot 508, the first official pictures of which were leaked onto the web today. Designed to replace both the Opel Insignia-challenging 407 and the larger 607, the French automaker's new mid-size contender will have its first public outing at the Paris Motor Show at the end of September, and go on sale across Europe and other markets early next year.Peugeot previewed