For every gram of tyre rubber and brake pad that ends up as dust in the air, I'd guess 10 grams of road surface end up in the air. Are they also going to be re

For every gram of tyre rubber and brake pad that ends up as dust in the air, I'd guess 10 grams of road surface end up in the air. Are they also going to be regulating road surfaces, or is this a case of them regulating the easy targets while ignoring themselves?.