Nissan celebrated its 80th anniversary by debuting its sport sedan concept at the North American International Auto Show in Detroit Monday afternoon.

The four-door sports sedan joined a trio of concepts that share a new signature look for the brand — a new “floating” roof, boomerang-shaped highlights and taillights and a new V-motion front.

"Nissan is a brand for people seeking bold and passionate experiences, and who are willing to make choices outside of traditional boundaries,” said Shiro Nakamura, senior vice president and chief creative officer. “That's why Nissan is committed to breaking new ground in automotive design, as expressed in the stunning new Sport Sedan Concept."

The sport sedan rides on custom 21-inch aluminum-alloy wheels with low-profile tires.

The front-wheel drive is powered by a 300-plus horsepower 3.5-liter V6 engine backed by a sport-tuned Xtronic CVT.

"The Sport Sedan Concept shows a new, highly emotional and energetic design direction that takes Nissan's legendary approach of applying sports car principles to a sedan to the next level," said Nakamura. "The Sport Sedan Concept captures that essence with bold and exciting sports car design and proportions."