The future is one where engines have not just been downsized but completely eliminated, or at least that’s the prophecy that the BMW Vision EfficientDynamics makes. The Frankfurt-bound concept has been teaser in this new video from BMW. It’s a bumper-view of the concept car racing down some green B-roads and guess what – no engine noise. It’s definitely a really powerful electric car of sorts, not sure if it will be powered by plug-in chargeable batteries or hydrogen fuel cell. But the sight of the bizarre tail lamps above makes the question of how this new concept will look like an equally big questions as what it’s powered by. Watch the video after the jump.