2009 Audi RS6 Sedan, Revealed: Twin-Turbocharged Four-Door Power!

It's a lazy Monday afternoon in the summertime, and if you're Audi, that means it's the perfect time to reveal a new double-turbocharged quattro-equipped sports sedan. Enter the new 2009 Audi RS6 Sedan and its big twin-turbo V10 engine with an output of 580 HP and 479 lb-ft of torque — the perfect bookend to the Audi… » 8/11/08 6:02pm 8/11/08 6:02pm