Driven by a big jump in sales of its flagship Altima sedan and in most of its truck models, Nissan North America said its January volume rose more than 10 percent from a year ago. Consumers still aren't heating up as much as expected to the electric Nissan Leaf, though: Sales of that model came in at 676, well below the 1,000-cars-a-month pace Nissan officials had hoped to be setting by now.