VW emissions test

mopowers said
It depends on what emissions you're talking about. GHGs and smog-forming criteria pollutants (NOx, VOCs, CO, SOx, PM, etc) are two entirely different animals. Unfortunately, controlling one sometimes inversely affects the other.

Hmmmm, please do elaborate... thx

mopowers said
What sucks is that GHG regulations are usually worded in a way that prevents any backsliding in criteria pollutant controls, which came first.

??? So, VW 'certified 2015 EPA test vehicles' (read sample test units pass emissions criteria = rubber stamp total build units) of course could not have the slightest inference to the Honda Motor Company
bait & switch game of the late '90's???

Just asking Sir.