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In lots of places the tailpipe emissions of a modern car are cleaner than the air.

CO2 is a pollutant, but it's not a toxin when the concentration is low and oxygen is available.

That conveniently ignores the non-tailpipe emissions, for example dust from tires and brake pads. I also suspect that it's only true in the lab, I have the pleasure of cycling through many clouds of noxious soot from supposedly modern cars whose owners just happen to press the throttle harder than what the NEDC requires.

I find the first statement hard to believe. Running a car in a closed space is deadly.

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