Would those not be covered by PM2.5? PM2.5 has also decreased in the Bay Area (removing the effects of the massive fires of the past decade). Particles from physical wear are many orders of magnitude larger than molecules.
Good news, EV and hybrids can do regenerative breaking that don't use friction to slow down. You can go a really long time and not touch the real breaks beside the 5mph to stopped
The weight is all battery. It will come down, it already had in Asian nations where long range doesn't have the same marketing affect as it does in the USA. Americans thinking they need 1000 mile batteries and literal tank like chassis puts their cars at a massive efficiency disadvantage.
