Hanoi, Vietnam AAAAAAA January 26, 2006: Hanoi is the capital of Vietnam. It is also the nationAAAAAAAs political and cultural heart as well as a vibrant business centre. The bustling streets of the Old City are constantly congested with thousands of motorbikes, bicycles, cars and buses. HanoiAAAAAAAs population is estimated at over 6 million people with a staggering 3 million motorbikes! The city is facing huge problems from increasing traffic pollution and congestion.