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A recent BMW poster that I liked a lot was a dark silhouette of an E46 sedan, in a wind tunnel. There was the wind tunnel line of smoke going from the front headlights, over the hood, the windshield, roof, back window, and trunk. As the stream trailed off the top of the trunk, it made a little swirl in the shape of a heart. Tried to get my salesman throw in a copy with the car, but he'd never seen it. I'd love to get a copy if anyone knows...