2015 Volkswagen GTI

According to Edmunds, Volkswagen is currently developing a carbon fiber roof option for performance versions of its Golf hatchback. This feature would not only save weight, but could slightly improve fuel economy as well.

Adding the carbon fiber roof could shed anywhere from 18 to 20 pounds off the porky little hatch's curb weight, Edmunds reports. At this point in development, Volkswagen is currently working out how to develop a set of waterproof joints to seal the roof to the car's body sides and windshield.

Pricing or specific launch timing for the carbon fiber roof has not been released, nor have any details about what specific models will receive the option. Of course, it stands to reason that the hottest Golf of the bunch, the R, will have this weight-saving feature, but the perennial favorite GTI, pictured, would also be a good match for something like this.