See what was published just days before the VW scandal in Nature. <a href="http:&#x2F;&#x2F;www.nature.com&#x2F;nature&#x2F;journal&#x2F;v525&#x2F;n7569&#x2F;full&#x2F;nature15371.html" rel="nofollow">http:&#x2F;&#x2F;www.nature.com&#x2F;nature&#x2F;journal&#x2F;v525&#x2F;n7569&#x2F;full&#x2F;nature1...</a>