The GM Cammo guys are very good at what they do and a Mid-engine C8 Covette gets ALL of their tallent. Why bother building an obviously function only, completely bogus body with that horrible spoiler then put a grill and "emblem" on it that tells the photogs the bloodline of the mule?
I think C&D got this on right. we are looking at the C8 Mule. However, the concept drawings ... waaaaay to early for those to be even a possibility, IMO.
BTW, the pic below clearly shows the Vette targa top.