Looks like a pretty standard sedan from any company from that era to me, just with a Citroen grill and fancy rims.

Put that grill on a BMW 6 series from that time, looks about the same.

Unbelievably unimaginable compared to the sedans on the road today, I see those types of cars everywhere? Not sure what's supposed to be the "concept" besides the "gills" or whatever it's called.