Volkswagen's former CEO has always said that he knew nothing about his company's emissions-cheating policy. His default line is that he learned about the scandal just days before the firm publicly admitted its guilt. Unfortunately for Martin Winterkorn (pictured), internal memos suggest that his memory might be a little faulty. The New York Times is claiming to have seen these documents, kindly supplied by German newspaper Bild. If accurate, the paperwork says that Winterkorn may have known about the conspiracy up to sixteen months before it was revealed to the public. One document, dated May 2014, is an explicit warning to him that regulators might have found the offending defeat device. So, uh, hey, Martin -- you still sure you didn't know anything about this until September 2015?