The Audi RS6 takes on the Mercedes C63 AMG Black Series in this drag race! Which comes out on top? See the next episode (McLaren 650S vs Lamborghini Aventador): http://bit.ly/1rGGjYr See the previous episode (Porsche 996 vs Ferrari 328): http://bit.ly/1wO8H0e See all of the episodes in this series: http://bit.ly/1wO4Tgn Tune in on Mondays and Fridays for more drag race shoot-outs! Subscribe to our
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