2008 Cadillac STS Preview – New York Auto Show: Okay, okay. So most sophisticated sedan shoppers overlook the STS, moving instead to the BMW 5 Series or another German – or Japanese – luxury entrant. That's a shame, too, for it has gradually improved to the point where the standard 2008 model now boasts more V6 power, a smooth-shifting (we think) six-speed transmission, a slightly more modern style and a bunch of new safety features. The name may lack cache among luxury sedan snobs, but with these upgrades, smart shoppers should put the 2008 STS on their list of cars to see.