No longer willing to play second fiddle to BMW’s formidable M division, Mercedes-AMG is now clearly ready to kick things into a higher gear. The first weapon for attack came in the form of the new AMG GT, the replacement for the SLS AMG. Think of it as more of a Porsche 911 fighter, but AMG isn’t stopping there. No, it’s up to something new and naughty. For now only this brief teaser video has been released, but it sounds like something very fast.