Somewhat surprisingly, studies ([1] in French, sorry) show that on average drivers breath worse air than cyclists actually. The main reason they bring up is tha

Somewhat surprisingly, studies ([1] in French, sorry) show that on average drivers breath worse air than cyclists actually. The main reason they bring up is that the relatively airtight cabin accumulates particles, whereas people traveling in open air can get short high peaks but lower pollution on average. [1] https://www.lemonde.fr/planete/article/2014/03/13/auto-metro-ou-velo-ou-respire-t-on-le-moins-d-air-pollue_4382697_3244.html https://www.lemonde.fr/planete/article/2014/03/13/auto-metro...