As a considerable proportion of China is swathed in toxic smog planners are considering how to combat the problem. One proposed solution is to move people and businesses away from the suburbs of Beijing into outlying districts. The move would give people shorter commutes and lower the density of people in polluted areas. In the last 18 years energy consumption has doubled and the number of cars tripled (Oh for the Halcyon days of bicycles)! The long term plan is for Beijing's population to be capped at 23 million.