It's good for everyone to do their part, but a few buses probably don't make a significant impact compared to their utility, even when lightly loaded. Remember

It's good for everyone to do their part, but a few buses probably don't make a significant impact compared to their utility, even when lightly loaded. Remember that something like 80% of global pollution comes from industry. Focusing too hard on individual vehicles is a smokescreen--even if every driver in the world switched to electric cars/trucks/buses tomorrow, it wouldn't make much difference by itself.