Have you ever been to Japan, Germany, etc? Cities there are shaped completely differently to cities here. The article uses the Vienna Metro as an example of what not to do, and in a way it is. But it’s that way because Vienna is almost entirely low density sprawl, with homes sitting on a quarter of an acre or so. The whole DC metro area is shaped that way, and that drove the structure of Metro. The DC Metro area has 6 million people, about the same size as the Berlin metro area. But 3.7 million Berliners live in the city itself, while just 700,000 Washingtonians do. Berlin and DC are similar of a similar density, but almost all the DC Metro population lives out in the low density suburbs. A lot of the jobs are out there too. A lot of tech jobs are in Reston and Dulles, 20-25 miles west of DC. Do you know what’s 20 miles west of Berlin? Nothing, it’s farm land. The kins of transportation network a city like DC, where the population and jobs are spread out among low density suburbs, and a city like Berlin, with population and jobs concentrated in the core city, needs are completely different.