We first told you about the Mercedes E Superlight back in October 2011. Now new details on this futuristic Mercedes have emerged.

The Superlight is Mercedes answer to Audi’s etron and BMW i models, an advanced carbon fiber-bodied car powered by the latest green powertrains.

The E, however, is a normal sedan and not a fancy sports car or a weird-looking spaceship with wheels. Size-wise it is pretty much the same as the current CLS, but its styling is still a mystery. By the time it’s ready to come to the world Mercedes will probably have adapted a new — and hopefully better — design language.

One feature of the Mercedes E Superlight mentioned in all reports is the lack of B-pillar. Apparently, the new carbon fiber structure is so strong that there’s no need for a B-pillar, and that gives the designers more freedom. The car will introduce a new door concept, a first for a car in this segment.

All the technical bits such as the powertrain and suspension components are all integrated into the carbon monocoque. That result in further weigh saving and more efficient packaging. That’s why the powertrain is said to be a mix of a 150bhp fuel-cell and a 50bhp electric motor. With a car so light, you don’t need massive power to achieve good performance.

So when you can expect to see the E Superlight out in the real world? Probably no sooner than 2015.

Read more about the car here: Car