The article cited combustion-derived particulates, not concrete/tar. They specifically point to strongly magnetic nanoparticles containing Fe. EVs will certainly not release these, though the power plant used to charge them might.

It seems they could be pretty easy to filter since they're strongly magnetic.

[0] Estimate about half of the particulate emissions comes from non-combustion sources (brake wear, tire/road wear, dust re-suspension). Interestingly 16-55% of these particle emissions in city-areas comes from brake wear, which should be significantly lower for EV's since they mostly slow down by regenerating. This might offset the weight-related increase for EV's.

[0] http://publications.jrc.ec.europa.eu/repository/bitstream/JR...

I'm not sure if it has been looked into yet, but once EVs are abundant it would make sense to look into ways of reducing pollution from road wear. Right now it's not worth it as much, since pollution from the cars themselves dominate. But once road wear is the dominant source it'll make sense to look into it.

Automated cleaning trucks which sweep the road for dust every day maybe? New materials for roads and tyres?