Although plastic particles in the air are increasingly coming into focus, knowledge about their distribution and effects is still limited. Chemical analyses from Leipzig now provide details from Germany for the first time: Around 4% of the particulate matter consists of plastic. Around two-thirds of this comes from tire abrasion.
So, there is plastic in our rubber tires? Interesting. Can we call it plas-rubber then and sound all futuristic at least?!
I don’t think we’ve used tree rubber in our car rubbers in a long time
https://en.wikipedia.org/wiki/Synthetic_rubber