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Cadillac has already been releasing a steady drip of information about what's going into its 2013 XTS like its autonomous-vehicle tech, and now it's focusing on lighting choreography. Cadillac reminds us that its lighting signature is vertical bands of illumination, tying it back to 1948, when the tailfins for which the brand is still known were first used on cars like the Fleetwood Sixty Special and Series 61 Coupe.

Surviving the initial bankruptcy shakedown, yet still struggling to stay afloat, the Buick division of General Motors is introducing a new advertising campaign starting this weekend - adding to the handful of all-new campaigns it has launched since 2002. The new offensive, aimed directly at the intended audience of baby-boom drivers, carries the theme "Take a look at me now."