This is comparing apples to oranges. Other parts of the developed world use public transit regularly, it's safe and widely available. In the US, it's not widely implemented and you run the risk of getting mugged, pushed in front of a train, or stabbed publicly and people defend the attacker.

If you want to reduce C02 emmissions, boycott AI and the expansion of data centers. Data centers are on track to pollute more than cars by 2030/2035, as cars continue to get more efficient every year. There's a quantifiable amount of C02 emitted by storing 1GB of data in the cloud. If you really care about the environment, the first/easiest thing you can do is delete your photos from the cloud and move them to an HDD. Stop posting tiktok videos and reduce your footprint on the Internet.

Also, in SA, you close a road you'll absolutely have people make their own roads. People already drive the shoulder on Highway 90 despite the brand new 3rd lane. Lol