Last year, the U.S. Embassy installed an air monitor on the roof of one of its buildings, and every hour it posts the results to a Twitter feed, with a score ranging from 1, which is the cleanest air, to 500, the dirtiest.
To that end, Nissan incorporated a glass roof, to let in daylight, and a high-resolution seven-inch flat panel monitor for watching videos, using the Internet, or controlling cabin temperature, lighting, etc.