A lot of people here are commenting about CO2 emissions, but there’s another big reason that people are missing: air quality. Bad air quality is a major public health issue that kills [100,000 Americans every year](https://www.usnews.com/news/national-news/articles/2019-04-08/100-000-americans-die-from-air-pollution-study-finds), and a big cause of air quality reduction in cities is vehicle emissions. It’s much better to generate all those emissions at big, centralized locations far away from population centers.
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