Trying to spread its newfound success to Europe, Cadillac is debuting in Geneva its latest effort, the BLS. Based on the Epsilon platform that underpins the Saab 9-3 and Chevy Malibu, the Cadillac BLS is a compact four-door sport sedan that takes aim at cars like the Audi A4. The BLS will only be available in eco-conscience Europe, and the engine lineup reflects that. A turbo-diesel will power a Cadillac for the first time; the 1.9-liter unit joins three gasoline offerings. The design of the car is uniquely Cadillac, and certainly unlike anything currently on European roads. It shares the same upright grille and headlights as the other neo-Cadillacs, and from the back it looks very similar to the new STS. But we think GM could have done a better job masking the steering wheel--it appears to have been ripped from a Saab 9-3 intact and disguised only with a feeble Cadillac sticker in the center.