But remember it's all theater and the average democrat voter is too stupid to realize that black smoke is just soot and not harmful pollution. (Yes I realize diesel emissions create more NOx than gas, but as a net whole for the climate it's far less impactful)
Comprehending invisible things is far too difficult for someone who would vote for biden.
It's still harmful to breathe. It just doesn't impact CO2 in the atmosphere as much as gas cars do. And speaking of CO2, why not plant more trees? plants use C02 in photosynthesis and turn it to O2. We don't have to hug the trees to end global warming. Just plant them.
Disclaimer: The last line was a joke. I'm not saying global warming is a thing we need to solve for. But still. Plant more trees.