And here you were thinking Mercedes-Benz's Attention Assist system was the thing in driver alertness aides. In a rather odd, nearly jocose press release, Nissan has revived our faith in corporate R&D with the glorious introduction of the Forest AC. In short, this new air conditioning system "systematically controls cabin temperature, ventilation, aroma and humidity to create an optimal interior environment." Still bewildered? It means that the system can tap into an array of sensors in order to find out exactly what environment is best for your current state of