Focusing solely on CO2 can be a bit of a trap though. As the article mentioned, kids inhaling diesel fumes on hour long bus rides isn't great. Same with all the particulate spewed out in cities. So while you may have a point on CO2 alone(or not, haven't looked at numbers) we often get blinded by one metric. I think it's fair to argue the more holistically, replacing diesel buses with EV buses has a much bigger positive effect on our environment than moving people from Civic's into Model 3's does.
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