Porsche and Audi take sibling rivalry to a new level in the latest episode of Head 2 Head.
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The 2012 Audi R8 is the automaker's supercar, and the R8 GT Spyder is a limited edition enhanced version of this already impressive car.
Audi teases some of the cars to be revealed at the Frankfurt Auto Show.
Audi says its hybrid offerings will go upmarket in to its flagship A8 sedan in 2012, meaning efficiency just got a whole lot more alluring.