I seem to not have communicated my point very clearly. Diesel particulate pollution kills very significant numbers of people, and it kills poor people (who hav

I seem to not have communicated my point very clearly. Diesel particulate pollution kills very significant numbers of people, and it kills poor people (who have to live next to the freeway and on urban thoroughfares) disproportionately. I don't care about how easy it is to find a $100 car; I care about policies that we can enact today that can stop truck owners and manufacturers from externalizing their pollution costs onto everyone else. You make a good point about PM being easier to address than NOx - PM is more of an urgent concern given what we now know about its health effects. Whether by retrofitting or by retiring, the engines that emit more PM than the 2008 standards have to go. New diesels are fine. I agree with you EV trucks are not here yet. The point is there are trucks out there that are 10,000x more harmful in PM emissions than the same exact capability new truck. They need to be removed.