What's under the skin of this widebody Audi flagship? According to spies it's the next-generation A8, which if you ask those who stalk such luxurious prey, is due for release in 2009 as a 2010 model. How can you tell? Cast your peepers on the wider fenders and body elongation, which hearkens the next model's expanded footprint, via Audi's Modular Longitudinal Platform, an architecture shared with the A4, A6, Q6 and upcoming A5. Expect better handling and a tighter road feel, more power and the Le Mans-winning TDI V12 under the hood, optionally speaking.

Cold Weather Test Mule: Next Generation Audi A8 [Audi World]

Spy Photos: Next Decade's Audi A8 [internal]