Nissan's new Forest AC system is one of the strangest new car technologies that we've seen. In order to keep you awake, this setup will "systematically controls cabin temperature, ventilation, aroma and humidity to create an optimal interior environment."
And what exactly does that mean? Well, it means that your car will be able to tell just what you need the interior to smell and feel like to keep you alert and happy. Starting to drift off? It'll blast the AC and make the car smell like a forest. At least that's what I think it'll do. In any case, we'll get to see exactly what it does soon enough when it ships in the Fuga in Japan later this year.