BMW's Vision Efficient Dynamics Hybrid Concept
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Like all BMW's it's all mouth and no trousers (yes, it's got ED).
Efficient dynamics REQUIRES efficient AREODYNAMICS (yes the current BMW "ED" ad's are making claims to good Cd but the CdA is still piss poor). When BMW make a car with a CdA under 6m², then and only then will they deliver an efficient car.
My 1991 Nissan has a CdA of 0.55m².