Garages are expensive to build and if you design your roads so that no person with the means would choose anything but driving and ignore the rest, then sprawl becomes the reasonable choice, since people are driving to every destination anyway. What’s the point of the added expense of a garage if you don’t really care about being close to other things nearby?
acid rain was legit, then the world’s governments actually did something about it and it became not a thing. Much like the hole in the o-zone (at least until Elon’s vanity satellites start failing at a high enough rate to decimate the o-zone) and how we could mitigate climate change if there was political will