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[–] 36 points 2 months ago (4 children)

The most obvious solution to "idling combustion engine is polluting" is get rid of the combustion engine to the extent possible.

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  • [–] 4 points 2 months ago (3 children)

    You would still have cars in that case, and combustion engines aren't the only cause of air quality reduction from cars. Tire wear puts a lot of carcinogens into the air as well at the very least, and I'm sure there are other things.

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