Hey, Nissan: you won't be the only big automaker with a camera-equipped rearview mirror next year. Cadillac has revealed that its future cars are getting a smart mirror that shows a 1,280 x 240 view of what's behind you without passengers or roof pillars getting in the way. You can flip between the camera's perspective and a conventional mirror at the drop of a hat, and the system is designed to both give you a wide view and hold up in harsh weather. It sounds cool (if familiar), but you'll be patient if you want a Caddy with this extra safety measure in place. The mirror will first be available when the CT6 launches in late 2015, and it could be a while longer before it spreads to other models.