The ATS and XTS Cadillac sedans promise to be the most exciting thing to happen to Cadillac in decades. The XTS is a full-size sedan that looks almost exactly like the Sixteen Concept everybody got so excited about. Of course, that concept was so named because of its massive V16 engine that probably went from 0-60 in something like -2.9 seconds. Naturally, the XTS that likely will head to Chicago Cadillac dealers will come equipped with the more reasonable, but still highly powerful, next-generation small block V8. Continue Reading…