Nissan is finally killing the Altima sedan, based on what Ponz Pandikuthira, head of product planning in North America, told WardsAuto. The executive reportedly said the Altima is being killed to give the "grown-up" Sentra more space to stretch its legs. Car and Driver reached out to Nissan to confirm the timeline for the Altima's demise, and we'll update this story if we hear back.