With a screaming naturally aspirated V8 making nearly 500 horsepower under the hood, the all-new Lexus GS F promises to be the most potent sedan to ever grace the Lexus showroom. Throw in a refined cabin, spacious interior, and wicked styling and what you have is a legitimate alternative to German and American luxury sport sedans. Just don't compare it to a BMW M5, Mercedes-AMG E63S or Cadillac CTS-V.