In just the few short months it's been active, the official Instagram account of GM Design has become a varied, wonderous, ever-growing collage of GM design concepts that are, ultimately, too wild or impractical to ever reach production as-is. Even still, some posts might at least give us an idea of what GM is working on, and what direction the automaker's saleable production designs will take.

That includes this sketch by GM Creative Designer Andrew McMillan, which could well preview Cadillac's next SUV. Seeing as GM has announced its intentions to put Cadillac at the fore of its push toward emissions-free electric propulsion, we don't think it's a stretch to say the vehicle depicted therein is pure-electric.

All-in-all, it's a much more rugged form than we're used to seeing from the Cadillac brand, with a broad, imposing face, tall headlamps, massive bulging fenders, and a big, square section of exposed bumper. It's also wearing roof rails, which isn't something we immediately picture when someone utters the name "Cadillac," and the tires appear to be about the width of tank tracks.

Beside that, the mystery Cadillac features some big air curtains, with inlets positioned just inset of the headlamps, and a closed-off-looking grille - another indication that what's being depicted is an EV and not a gas-burner.

So, what are we looking at? It could be nothing. Or, it could be an early design sketch for Cadillac's forthcoming electric counterpart to the full-size Escalade SUV - a vehicle that Cadillac has already is confirmed is coming, which will derive its platform from the forthcoming GMC Hummer EV. This sketch looks decidedly Escalade-like, no?

In truth, GM has plenty more premium EVs coming after the Cadillac Lyriq, which was unveiled just last month. There's the aforementioned Escalade-like electric SUV, the low-volume Cadillac Celestiq halo car, and two other pure-electric utility vehicles. In other words, it's going to be a busy few years ahead.