The elegant lines of the LS 400 are beautiful. No single aspect of the exterior design is striking, but the overall design fits together. Its squarish form is reminiscent of Mercedes shapes, which is not coincidental -- Toyota designers borrowed liberally from European ideas of luxury sedan size and style. The edges are sharp and distinct, not soft and curved. Eye-catching chrome trim, a staple of American and European luxury class cars, is sparse on the LS 400. But Lexus added new aluminum wheels and a bigger grille this year, giving its a stronger, more eye-catching appearance