While we’ve done our best to keep you fully updated and…visually informed about all the world premieres (and the North American debuts, but those don’t really matter, do they now) set to take place at the Detroit motor show on Monday, some production cars and concepts have eluded us.

That doesn’t mean they will all remain hidden from plain sight until Monday, or at least not in their entirety, as this cropped teaser photo that was just released by automotive spy Chris Doane proves.

We’re guessing that the rear diffuser shot comes from a surprise premiere or a car that has been announced but not shown yet, and we have plenty of those, including the Corvette Stingray Z06, Ford F-150, GMC Canyon, Acura TLX and the Toyota Mirai sports concept.

So, what do you think it is?

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