Figure 1. Example of mode space meme. Source: Press-Office City of Müenster, Germany. http://www.treehugger.com/htgg/how-to-go-green-public-transportation.html
Figure 2. Image from “let’s go to town”/general motors corporation. http://www.citylab.com/commute/2016/08/1950s-general-motors-film-buses/496694/
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