Thank you Toyota, for teaching us the plural of Prius, because somehow, "Toyota sells one million Priuples" just doesn't jive. That's right, the Japanese automaker announced Wednesday that it has officially sold its one millionth Prius on American soil. It's reportedly also reached a couple of other sales milestones in the last six months, with worldwide Prius sales reaching two million in October and overall Toyota hybrid sales exceeding three million in March. Now that's a whole lot of Prii. Full PR after the break. Toyota Sells One-Millionth Prius in the U.S. TORRANCE, Calif., April 5, 2011 – Toyota Motor Sales (TMS), U.S.A., Inc., today announced the one-millionth sale of the Toyota Prius, the world's first mass-produced hybrid gas-electric vehicle, in the United States. It is the third milestone for Toyota's hybrid lineup in the last six months that started with the announcement of worldwide Toyota Prius sales topping two million ...