2013 Revealed in –  is celebrating 30 years of production at its Atsugi, Japan technical center, so it produced a commemorative video (shown below) to mark the event. It looks as if Nissan may have inadvertently revealed part of the 2013 Altima ahead of its debut. The keen-eyed crew over at Inside Line spotted a completely undisguised version of the four door in a promotional video on Nissan Japan’s YouTube channel. While we’ve seen test vehicles in various states of disrobe for a few months now, this is the clearest view yet of the next-generation Altima. We can clearly see the vehicle’s 370Z-inspired headlights and the hint of a more pronounced grille as well as more emotive bodywork.