Train crash casts doubts over China's rail ambitions

The fatal train crash at the weekend in the eastern Chinese city of Wenzhou has caused widespread public anger.

Chinese Premier Wen Jiabao has vowed to conduct a transparent investigation into the crash.

But the crash has also cast a cloud over China's ambitions to sell their trains to the rest of the world?

Alistair Thornton, analyst at IHS Global Insight in Beijing, discusses who was keen to buy Chinese train technology and whether they'd still be interested