Visitors walk around at the Shanghai auto expo in Shanghai, east China, April 20, 2009. [Pei Xin/Xinhua]
![Visitors walk around at the Shanghai auto expo in Shanghai, east China, April 20, 2009. [Pei Xin/Xinhua]](http://images.china.cn/attachement/jpg/site1007/20090421/000bcdb95f1d0b5760380d.jpg "Visitors walk around at the Shanghai auto expo in Shanghai, east China, April 20, 2009. [Pei Xin/Xinhua]")