1991 Pontiac Protosport 4

The 1991 Pontiac Protosport 4 was a concept car designed as a high-performance, four-seater sports car, featuring a unique design with four clamshell doors and four-wheel steering. It was powered by a 4.0L DOHC V8 engine and had a carbon-fiber body, a long wheelbase for passenger comfort, and large, staggered wheels.
Key facts about the Protosport 4
Vehicle type: A concept car, not a production model.
Engine: A 4.0L DOHC V8 with 250 horsepower.
Drivetrain: Rear-wheel drive and four-wheel steering.
Doors: A unique design with four clamshell doors that open upward over the roofline.
Body: A carbon-fiber body.
Wheels: Front wheels were 19-inch and rear wheels were 20-inch.
Wheelbase: A stretched 120-inch wheelbase to provide ample space for four adult passengers.
Purpose: To blend the comfort of a four-passenger vehicle with the performance of a sports car.
Other appearances: The car was featured in the movie Demolition Man, according to this Facebook post.