Just get rid of the EPA. They've screwed up the diesel market and VW was hacking around it. The VW engines produce less nox per mile than a gasoline engine, but more per gallon, and the EPA is derp-tastically stuck on gallon which makes no sense to any rational being. Rather than price diesels out of the market, VW did the right thing for the environment and hacked around the EPA. Yeah, they got nabbed, but they didn't do anything wrong ethically, unless you favor regulatory compliance over the environment. As usual, the EPA causes more harm than good.