> I would never have thought that such trace amounts of… everything one has ever shared a room with, essentially follow them everywhere dispersing as they go.
Everywhere you drive, you leave behind microplastics as particulate. These are washed into waterways and end up in aquatic ecosystems, including the seafood you eat. There's also some small enough to be airborne, thus prone to inhalation by humans and other animals.[1] Particulate production from road wear increases with the fourth power of the weight of the vehicle.[2] One has to assume by Newton's third law that the same is true of tires. Tires and roads are made of petroleum-based materials, i.e., they produce microplastics. This means a car twice as heavy (e.g. EVs vs ICE cars in the same form factor) produces sixteen times as much particulate matter. This also means that typical cars emit a minimum of four million times as much particulate as bicycles. E-bikes emit 10 times as much particulate as bicycles.
Microplastics cling to everything, that's just the nature of particulate. So they follow you everywhere.
