BMW i8 Concept Spyder 

Like its Coupe sibling, the emotionally charged BMW i8 Concept Spyder combines intelligent lightweight design with the leading-edge drivetrain technology eDrive, while its open-top two-seater construction delivers an even more intense driving experience.

The combination of intelligent lightweight design and state-of-the-art hybrid technology imbues the BMW i8 Concept Spyder with genuine sports car performance, yet its fuel consumption is no higher than you would expect from a small car.

The dynamism and the beauty of the exterior is combined with the elegance and luxury of the interior.

Both are very impressive models that will undoubtedly be cheaper than the i8, but the i8 has the advantage of delivering the best fuel economy of them all.

BMW says total output is 349 hp and 406 lb-ft, and that power can be shunted to the front, rear, or all four wheels.

For the first 19 miles, the i8 can run on electricity alone; after that, the gasoline engine kicks on and both feeds power to the rear wheels and juices the battery pack.