's M range may have once been limited to coupes and sports sedans, these days it has room even for performance crossovers. One thing BMW has never done, however, was give the 7 Series the full M treatment. That, according to reports, could be set to change. Well, almost. BMW has created another level of performance vehicles in between its stock models and the full-on M range. And that, we hear, is where the new M770i xDrive will slot.