Huffington Post: On July 20, half of private cars in Beijing went off the road in a sweeping attempt to improve air quality in advance of the Olympic games. Commercial and governmental vehicles, taxis and buses are all running as usual, but traffic is moving noticeably faster. I’ve been watching the plates, and drivers really are obeying the regulations. Furthermore, the Chinese have suspended tourism and visas for anyone not attending the Olympics, which is improving traffic even more. There are noticeably …