It's irrelevant, because as I've pointed out on these forums before time and again, nothing is going to change with human nature as it is and with an obsession on technological gimmicks or focusing on CO2. Climate change activists, for the most part, can't see the forest for the trees; they're like a doctor treating someone bleeding out by transfusing more blood, rather than address the sucking chest wound.
If we care about particulate emissions, we should ban all cruise liners today. Right now. Fuck that industry.
Know what doesn't produce tyre and tailpipe emissions in cities? Street cars and light rail. But no, we have to go with the two tonne of lithium ion powered steel cages to take little Timmy down the road to school. That's green, for both the planet and our bottom line, the automakers say.
I'd be more concerned about microplastics anyway, and, well, good luck getting rid of them. If you think male fertility issues are bad now...
COP(E) 27 is another charade of rich people flying private jets to tell us they really, really, for really reals time definitely need to absolutely do something, soon, about the thing they keep ignoring because the solutions are "dismantle industrial civilisation". They're either too stupid to appreciate this (and they could be, most are lending their ears to economists after all), or they actually know and can't let the mask slip, but will give helpful hints like "you will own nothing and be happy". I'm looking at you, WEF.