I really don't think Japanese automakers have to go head to head against those Germans in every segment. I think M3, S4 are the "niche" market which has an image effect more than making money for the company. G45 or AWD 450Z would overlap with what M45 or the upcoming GTR should do. I am not against this idea, more choices for consumers are always good. But I rather see a super good GTR which could run with 911 Turbo and F430 but costs a lot less.