Porsche has released a new teaser video of the 918 Coupe, ahead of its debut the North American International Auto Show.

We're just hours away from Porsche's unveiling of a "speculator" new model, but the company has just released a teaser video which shows the car is the long-rumored 918 Coupe.

Details are limited, but previous reports have suggested the car will feature a V8 engine with upwards of 600 hp (447 kW / 608 PS). However, it remains to be seen if this is a concept, a production model, or a possible racing variant.

The car's unveiling is scheduled for 6:30 AM EST, so stay tuned for details.