For VW, I'm not particularly disturbed by anything they did. But, I don't buy that they have any kind of ethical obligation to obey arbitrary/dubious laws. (I have zero faith in any kind of environmental legislation/regulation as it is too often used abusively.)
What nobody will ask is whether or not the regulations that VW violated are ethical.
The question of ethics should focus on whether the actual emissions are ethical/unethical, and not on any law.
-Renegade
another aspect is that, because they have lied and deceived, they will lose a lot of sales.
Re the regulations, having cycled for years in a very busy inner city, I can tell you this:
you cannot filter out diesel fumes. I grew to hate them so much. I had high quality masks/filters, but apparently the only way to block diesel fumes is to block air completely. I've read that they are a proven carcinogenic.
I dont know what the regulations are like in the States, so cant comment specifically about them. But regulating diesel emmisions seems like a very good idea to me.
Judging by this action by VW, the motor industry wouldn't give a toss, if not for the regulations. Unfortunately, I suspect that many (most?) drivers wouldnt care either, but maybe I'm just being cynical there...