In the rural area, you maybe travel once a week to stock up but otherwise don’t need transportation at all.
The tires and some types of brakes still emit micro plastics.
By the way this argumentation is great to sabotage any argument to keep the statusquo. When someone argues for a way better solution, tell why it's still not 100% perfect to make people to believe it has the same flaws than the previous state. Repeat until someone finds a 100% perfect solution (hint: there is never such a thing).