Carbon looks nice. I've gotten away from wood on all my cars for last several years. I ordered my X5 with the brushed aluminum trim which I really like instead of wood. Both my Audi's have interior carbon trim pieces (standard OEM option)

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09 E70 35d (Space Gray/Tobacco)
08 Audi RS4 Cabrio (Sprint Blue/Silver)
2010 Audi R8 V10 (Velvet Purple/Black-White)