The US$1.7 billion line that runs almost 20km from the city centre. HO CHI MINH CITY: Thousands of selfie-taking Ho Chi Minh City residents crammed into train carriages Sunday (Dec 22) as the traffic-clogged business hub celebrated the opening of its first-ever metro line after years of delays. Huge queues spilled out of every station along the US$1.7 billion line that runs almost 20km from the city centre - with women in traditional "ao dai" dress, soldiers in uniform and couples clutching