Sell old car, get new car, utilize employee discount, win!
You can't swap just a screen (they need a matching computer to control the screen), but possibly the entire nav unit. Would need same wiring, same programming, same features. This is not likely and a quick side by side comparison of the parts could settle the physical side of things, then a spec sheet comparison could settle the features and communications side of things. That display unit is over a grand from Nissan/Infinity. Might be cheaper to go with my first idea depending on your cars miles.