[YoungGun1993]

While it may give us an idea of where things are headed, styling cues in the early stages of the design studio work are often over-exaggerated, even sometimes to the point where stamping technology couldn't execute designs as drawn (or at least affordably).

I believe it's unlikely that GM Design would've been so careless to have left late-stage drawings for top-secret, unreleased future product out when there's a scheduled visit from a video crew. Just imho.