Building roads and parking spaces is like shooting addictive drugs. The more roads, the more convenient driving becomes. This convenience leads to a growth in private vehicles. Then you have to build more roads again.
道路和停車位一樣，就像吃麻藥，路愈開愈多，愈方便，私人交通工具就愈多，只好再開更多路，永無止境。