Then they should get much smaller and lighter. If they have to get their tires and brake pad replaced for wear every so often, where are those particles going? Unless they evolve tires and breaks that don't shed particles in the water and the air, or get very very light batteries.

Yeah. Surely buying more tech stuff will save us. We just need to sell even more cars, but "ecological", and the car pollution problem will be solved in time, with even more cars, but less polluting this time! Truly a marvel of engineering.