Cadillac: CT6
Remember the Acura RLX? You probably haven’t seen many of those, and that story largely translates to Cadillac’s former CT6 flagship as well. Outside livery drivers, not too many Cadillac CT6 models found their way to buyers. Big luxury sedans aren’t where the money is these days, so we have the XT6 crossover instead.
Cadillac hasn’t entirely given up on sedans like Lincoln has, though. There are new versions of the Cadillac CT4 and CT5 (to replace the old ATS and CTS). As far as “flagships” are concerned, the brand will carry on with the updated Escalade and its three-row XT6, among its other crossover offerings.