Audi unveils its all new 2008 Audi RS6 Avant, which is powered by a twin-turbo V10 TFSI engine that produces an impressive 580hp and 480 lb-ft torque. Videos after the jump. First picture in gallery.

0-62 mph in 4.6 seconds, 0-124 mph in 14.9 seconds; Top speed of 155 mph (electronically governed); 17 mpg combined-cycle; quattro permanent four-wheel-drive; Unique bodywork, interior trim; Up to 58.6 cubic ft of cargo space; Optional ceramic composite brakes; 6-speed tiptronic

[via Autoblog]