Quick: What's the fastest production sedan in the world? Does it wear a Mercedes-Benz, Audi or BMW badge? What about the Porsche Panamera Turbo or the Cadillac CTS-V? There's no doubt that each of these vehicular behemoths is capable of ripping off some fast times on a race track near you, but Subaru is out to prove that its new 2011 WRX STI sedan has the chops to keep pace with the best from the rest of the world.
To prove its point, Subaru recently sent test driver and four-time World Rally Champion Tommi M