I Idled in an Electric Car for 12 Hours in the Freezing Cold

[ProfessorGAC]

42. While True...

...it doesn't scrub CO2.
Scrubbers work a couple ways:
The cheapest & most common is a falling liquid/rising gas device where an alkaline solution neutralizes the sulfur, phosphorus & nitro compounds into fairly innocuous salts. (Nitrates, phosphates & sulfates)
Another more efficient, but more expensive to install, is an oxidizing system that converts carbon monoxide to dioxide, the sulfur compounds (typically sulfur dioxide) to the trioxide which is water absorbed to form sulfuric acid (which has industrial uses). These are typically followed by the water scrubber above.
There are ways to sequester carbon dioxide but it's very costly & the efficiency is modest at best. Not many coal plants are doing this. It's a bit more suited to natural gas plants where the combustion effluent is much cleaner.