Sure, but a single bus would emit way less than the 60-150 cars (yes, large buses here have a total capacity of about 150 people [1]) it replaces. And if you have a bikable city like about every city in the Netherlands is, there's zero emissions.
> Meanwhile we still burn bunker oil (the leftovers from petroleum distillation) in shipping. It’s as if we swore off doing anything better for the planet if it inconveniences a large company.
We do, but even there there is progress! In fact, the regulations on sulphur content going into effect showed that this actually had climate impacts on the scale of an ultra-large geoengineering project [2]. On top of that, bunker fuel is banned in many countries' 12-mile-zone or at the very least near ports, ships have to burn diesel there.
[1] https://infoportal.mobil.nrw/technik/bussemitkonventionellem...
... but not in the desired direction. Sulfur dioxide emissions from shipping appear to have actually been slowing (!!) global warming by seeding clouds which reflected sunlight.
Also, what you’re looking at is an overweighted responsibility on people/consumers to own the solutions to pollution. No matter what car you buy today it is emitting less pollution than ten, twenty, and especially thirty to fifty years ago. Meanwhile we still burn bunker oil (the leftovers from petroleum distillation) in shipping. It’s as if we swore off doing anything better for the planet if it inconveniences a large company.
https://harvardpolitics.com/climate-change-responsibility/