Note that this is NOT EXACTLY a Nissan event. This is an XterraPlanet event, which is sponsored by Nissan. Nissan approached the Xterraplanet organization a few years ago to "borrow" the rights to the Xterra name. In exchange, Nissan would become a major sponsor of the triathalon.

It makes sense that Xterra's will be the center of attention at this event. However, other Nissans are invited - they just won't be the featured vehicle.