This is not the BMW eco concept going to the Frankfurt motor show, but a five-year-old design study, according to the company.
A spokesman for BMW this morning told Autocar that it is a model being moved from the central design facility.
The car is one of many studies made to explore different design directions and aerodynamics.
BMW is planning to reveal an environmental sports car concept at the Frankfurt show.
The EfficientDynamics Vision is designed to show how efficient a performance car can be and will feature eco innovations in the drivetrain and materials.
This suggests it could use aluminium or even fabric, as seen in the previous Gina concept car.
It is likely to feature intelligent aerodynamic systems that could one day find their way on to BMW road cars.
Expect the concept to be powered by either a hybrid powerplant, which could be a diesel, or an all-electric motor.