And now they're experimenting with using it in road paving.

Pardon my ignorance here. Isn't rubber (used in tires) different from plastics? Honest question. I've always thought of them as being different things. Not that I want micro-rubber particles in my lungs either.

Great question. I think because plastic and rubber are both petrolium byproducts, the 'shreds' of both are bad.

I googled, found: > Current tires consist of 19% natural rubber and 24% synthetic polymers (plastics), as well as metal and other materials.

So tires have both rubber and plastics. both are bad, and both get ejected into the environment at a horrific rate. :(

IMO this is why EVs aren't really the solution, not only is the mining bad, we still have tire rubber happening and that's also bad.

E-bikes and public transport would make for a much healthier world.

Yes bikes have tires but the dust would pale in comparison.