Though the Nissan Altima is already the second best-selling midsize sedan so far this year (behind the Toyota Camry), the competitive nature of this segment means that Nissan can’t afford to rest on its laurels.
The Prototype 9 will make its full debut next week at the 2017 Pebble Beach Concours d'Elegance.
Frankfurt motor show is the big reveal, at which point engine details and pricing will be announced.