Cadillac has a lot riding on the STS sedan. The full-size car needs to win over a wide range of buyers, so GM is sending the STS on the road to major cities on a good will mission. The "blitz" includes visiting trendy restaurants, office buildings, shopping malls and sponsored events for impromptu test drives and demonstrations. The Cadillac will also hit country clubs in hope of capturing the golf club set. Here in Chicago the STS will take on the likes of the Fairmont Hotel and Mike Ditka's Restaurant.