Spy Photos: 2011 Audi A8 blogs.insideline.com Audi's biggest and most expensive sedan has been on the market for too long. Sure, it still looks as good, or better, than its competition, but it's a little behind in the technology and power department. This prototype of the 2011 Audi A8 was caught testing at the Nurburgring recently. It's scheduled for a official debut in the next few months, but this test mule gives a pretty good idea of what it will look like.
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