Two things. The white engineering mule is just that, a mule. It may have some frontend body parts from the new car but the rest of the car looks to be the current body. They were probably testing cooling or something related to the size of the grille opening or whatever. Nothing to hang your hat on. The other point is that the red car is the Evos concept from last year's show circuit. It was intended to gage public reaction to a possible new corporate design philosophy, nothing more. If anything, the 2013 Fusion carries more styling cues from that car than the Mustang will. I would expect a similar design grille opening on the Mustang since that seems to be the new corporate "look" but that is probably about it. The grille design has been compared to that of Aston Martins which is not a bad thing, IMO. The latest Taurus uses the same shape grille. The article mentioned that the Mustang's headlights will be round which definitely can't be said of the Evos. I guess you could say that about the current car too, sort of.