As a city dweller I won't be so sure. Most of the noise I hear on the cement road is from the tires, and those big fugly tesla suv-sedan things are loud when they roll up with their 5000lb of weight. Most of the PM2.5 we are left with today is from tires anyhow thanks to the catalytic converter and unleaded fuel. That part isn't going away. To be honest I wish the climate crisis would promote people into lighter vehicles and mass transit versus just more of the same unsustainable patterns, but here we are. The green thing to do now is to replace your working car that is already built and delivered to your door with one 2000lbs heavier. Seems like green washing more than actual action to me. You would think bike lanes everywhere would be an easy win given how cheap they are, but its like no one really cares about doing anything but taking the car everywhere.