How Volkswagen Went From Being The Most Honest Car Company To The Least Honest

I read two Volkswagen-related things yesterday, a record low number for me. One was our story about the EPA's new suspicions of software-emissions cheating in their diesel V6 engines , and the other was an ad for the VW Type 2 Bus from 1967. VW's gains in automotive technology are staggering, but somehow on par with the losses in honesty. What happened?