It was probably just an early rendition of what they imagined the BEV IS should be like, especially if you look closely to how it resembles the current IS at the rear end. Whichever model they showed on stage was most likely what their original intent was, which is why the middle row of the image stayed the same pattern from left to right.
Two images side by side from the other thread I posted
click me
Two images side by side from the other thread I posted
click me
Last edited: