Employees work at an assembly line in AutoAlliance Thailand, a Ford and Mazda joint venture plant, located in Rayong province, east of Bangkok September 17, 2013. An incentive programme for first-time car buyers in Thailand has backfired with more than 100,000 indebted consumers defaulting, leaving the big global manufacturers that dominate Southeast Asia's largest auto market struggling to defend their margins. Picture taken September 17, 2013. REUTERS/Chaiwat Subprasom (THAILAND - Tags: TRANSPORT BUSINESS EMPLOYMENT)