Toxic Smog in Beijing Seen Fueling GM to VW Sales in China

Toxic Smog in Beijing Seen Fueling GM to VW Sales in China

Nelson Ching/Bloomberg

Commuters enter and exit at a Shenyang Metro stop in Shenyang, Liaoning. Shanghai and Beijing have rapidly expanded their Metro systems in recent years, and nine other Chinese cities have subway systems, with another 35 under construction or in planning.