BEIJING (Reuters) – China has begun studying when to ban the production and sale of cars using traditional fuels, the official Xinhua news agency reported, citing comments by the vice industry minister, who predicted “turbulent times” for automakers forced to adapt. Xin Guobin did not give details on when China, the world’s largest auto market, would implement such a ban. The United Kingdom and France have said they will ban new petrol and diesel…