Audi has a familiar-looking idea how to tackle this: https://www.audi-mediacenter.com/en/press-releases/audi-urban-purifier-the-fine-dust-filter-for-electric-v

Audi has a familiar-looking idea how to tackle this: https://www.audi-mediacenter.com/en/press-releases/audi-urban-purifier-the-fine-dust-filter-for-electric-vehicles-14949 https://www.audi-mediacenter.com/en/press-releases/audi-urba... Internal combustion cars do filter a lot of the ambient air already - a 2.0l engine at 2500RPM filters 150m3 of air per hour - that's as much as a small air purifier. It's just that it takes all this clean air and uses it for combustion, thus putting in more dirt than it filtered out.