The "" site has crossed the bridge to official BMW promotion, with a new Facebook competition to get a chance behind the wheel of the "secret car" on the racetrack--presumably before it's unveiled.

In the video we see a few enticing snippets of the car, which is looking more and more like the produciton version of the Vision EfficientDynamics concept. Little else takes place, but that's the nature of teasers.

To take a shot at getting behind the wheel, hit up BMW's Facebook page. To learn more about how the car may eventually look and drive, check out our coverage of the concept version.

[BMW via YouTube]