I see quite a bit of (mini) Enclave in the general shape and surface detailing. I just saw a new one (Enclave) for the first time in the flesh today, and it's pretty good-looking and appropriately upscale (w/o being showy), IMHO. If they can create an mid-sized EV that's equally handsome, that might be a decent seller for them.
I agree, especially it seems to match the sketches/shops that were linked to a large Opel CUV (said to be called Monza) approx. 2 years ago, likely based on some insider info. It nearly seems GM kept that design and will recycle it now as a Buick (which ofocurse makes sense)