Luxury crossovers are a dime a dozen these days, especially if you include into the mix models that aren't marketed specifically as luxury items but which pack on the niceties anyway. So, if you're looking to make a splash in this crowded market, you'd better offer something interesting, if not unique.
Into this fray waded Infiniti, the high-end arm of Nissan (the same way Lexus is Toyota's, Audi is Volkswagen's, Genesis is Hyundai's…) with an entry that offers a claimed new type of engine the company says "delivers the perfect combination of power and efficiency." Not that anyone has ever made a claim like that before!