Audi CEO Rupert Stadler is warning that connected and autonomous vehicles could affect drivers'  privacy.At a speech he warned that, "A car is one's second living room today -- that's private. The only person who needs access to the data onboard is the customer."  Stadler added that Audi takes data privacy "seriously," and that it didn't want its customers to feel "exploited."The Motley Fool website reports that, although he didn't mention them by name, his comments were perceived to be aimed at Google and the data mining potential of its driverless vehicles.  It added that fellow German automaker Daimler, which owns Mercedes-Benz, has also expressed similar reservations about data privacy in connected vehicles.  The site claims this represents a big setback for Google, which has been trying to forge stronger relationships with German automakers over the past few months.