Good lord, I go away for a couple of days and come back to this.
You guys really need to get over this. Though I suppose we should be grateful that a certain poster has not yet posted 50 messages saying the same thing like he did in the last thread about this vehicle.
Is it a heavy car? Yes, it's a heavy car. It is made to be safe and solid and all the things that structure gives you. It is not made using pop-can thin sheetmetal like certain other brands that are so popular here. I don't want to mention any names. But I know that Honda and Hyundai/Kia are not using exotic alloy bodies and suspension components to make their cars lightweight.
Is this model the ne plus ultra of Regal models? No, it isn't. As others have pointed out, more is to come. But we hear "Waaaah!!! Waaaaah!!! Toyondai/Ford/VW would never have done it that way!!!" Perhaps if they were coming out of a bankruptcy/reorganization they would. We do not know. What we do know is that GM was smart enough to recognize they had a very good vehicle on sale in Europe that would make a useful addition to the Buick line, and therefore introduced it as quickly as they could. Perhaps they would have preferred if the entire line was ready before being introduced, in which case they could complain that Buick had nothing worthwhile on the market.
Why would anyone buy this instead of the Toyondai flavor of the month? Why would anyone buy an Acura Civic... er, CXS; or a Lexus Camry.. er ES350; or a Lincoln Fusion... er, MKZ? As we concluded in the last thread on this car, you can't buy a car because of the spec sheet, unless you're named Jaeger. There are all sorts of things you don't get on a spec sheet, like refinement, ride and handling quality, driving feel, etc etc.
BTW: having driven this car and sat in all 4 seating positions, the rear seat is not tight. It is surprisingly roomy. I find it far more comfortable than that of the Malibu. All 4 seating positions are very comfortable, in fact. As for things like the "ill-fitting blank panel in the headliner", show us a picture of that, please. The rest of the comments, like the one calling the black plastic on the center stack low rent, are merely the usual gratuitous cheap-shot quotes out of the Canadian Driver reviewer's style book, to be used only when testing a domestic car. The reviewer would seemingly have the reader believe everyone else uses CNC-milled billet aluminum for that.