Former prime minister Dr Mahathir Mohamad has described the share swap involving Malaysia Airlines (MAS) and AirAsia as a very good idea.

He also expressed hope that the cooperation would benefit both sides.

"AirAsia can learn about the experience of MAS and MAS can learn how to reduce costs as done by AirAsia," he said when asked to comment on the collaborative framework entered into by the airlines earlier today.

Speaking to reporters after the breaking of fast hosted by carmaker Proton in Shah Alam, Dr Mahathir was also asked about the impact of US economy on Malaysia.

"We have shifted from the US to China. Our trade with China has increased multiple times.

"We have made preparations. When a slowdown hits the US economy, we have another big trade partner," he replied.

- Bernama