[emdash]

Refusing to understand something and are making an uninformed decision as a result isn't a great thing to brag about.

The fact is, emissions regulations in many ways have nothing to do with health or clean air. I don't drive a diesel truck myself so its not like I'm trying to defend my own behavior or anything. I'm a former automotive engineer who is unfortunately very familiar with the regulations and how nonsensical they are.

[ryeights]

So you’re trying to tell me that NOx and diesel particulates are not harmful to human health?