It also seems companies are moving faster than politics. E.g. deprecating ICEs by 2030/35, without any policies forcing them. The mere discussion about increasing CO2 prices triggered coal power plant operators to think about phasing those put before any policy enforced coal exit.
The pessimist in me will only believe any of that, and any positive impact, once it happened. Not sooner.
I think the biggest way we could screw this up is if our governments pick winner technology stacks now, and don't keep the doors open (and ideally fund) paths to breakthrough tech. The panic over climate change (which, arguably, has merit) may lead us to making this kind of error, since we feel we have to put all our chips in now on 2020s era solutions. Unfortunately, I'm not convinced that our existing tech stacks just need to be scaled up to solve the problem. We need to keep turning the crank of innovation.
2030/35 is a trojan horse because it is far too late. That's 15 years from now, and vehicles easily live for 20 years, so when people born today will be 35, there still be ICE cars around.
Thats not a measure to help, thats a fake measure to stop goverments from actually doing something effective.
The pessimist in me will only believe any of that, and any positive impact, once it happened. Not sooner.