well I guess Gm started to do this too. the new 2006 Buick Lucerne is almost like the DTS but the DTS looks more Elegant just like the Town car looks better than the grand Marquis. It has 275 HP northstar and the Magnetic ride and all the other bells a whistles;)
you can go here to check out the car http://www.buick.com/lucerne/gallery_exterior.jsp

I'm not the biggest fan of that new Lucerne...
it's pretty much a modified Impala.:D
I sat in it at the Auto Show here in MI and the interiors were nearly identical!
I really doesn't have much room in it, my knees were up against the dashboard when I sat in it.:rolleyes: