Go all out! RS6 bi-turbo V8 450hp/400tq, 4 door sedan, awd, voted fastest luxury sedan in its class. I saw one at one time in downtown mia, and i was like omfg i die lol Article from Fantasycars.com: "Mercedes offers 349 horsepower in its E55 AMG? BMW will give you 394 with the M5? Then Audi will produce 450. And so we get the RS6, a two-ton beast powered by a schmoozed-over version of the 4.2-litre 5-valve V8 used in the S8, featuring two turbochargers with twin air-to-air intercoolers, modified cylinder heads for better cooling, sodium-filled exhaust valves and freer-flowing intake and exhaust. Once out of their stables, the 450 horses pass through a 5-speed automatic transmission as featured on the A8 W12 (also on the site), which incorporates shift paddles behind the steering wheel, the closest thing that will ever be offered to a fully manual transmission. There is quattro awd (the car is built by Quattro GmbH for Pete's sake!) which routes the power down to the 255/35ZR18 tires. Audi's glorious overkill (at least until the RS6 is outdone by the next contestant) will leave your mouth watering: 0-60 mph in 4.6 seconds and 0-125 (I'm sure this little tidbit of information will come in very handy in your daily commute) in 17.8. So, yes, it's faster than the M5!"