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A comment on 25% of Cars Cause 90% of Automobile Air Pollution. Parent comment

Re:25% of Cars Cause 90% of Automobile Air Pollution by smeyer on Thursday May 07, 2015 @11:27AM (#9505743)
The specific quote if madaxe_again missed it:

>Researchers at the University of Toronto looked at 100,000 cars as they drove past air sampling probes on one of Toronto’s major roads.

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Re:25% of Cars Cause 90% of Automobile Air Pollution by madaxe_again on Thursday May 07, 2015 @01:53PM (#9506935)
No, fully aware that this study was in Toronto, but if it's remotely indicative of the variation of the environmental damage car emissions cause, then the problem is vastly exacerbated by old and poorly maintained vehicles driven in less wealthy and/or impoverished parts of the world.
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