Almost all automobile commercials of different brands use the same machine called Blackbird.
More precisely, this is not a car, but a special platform on wheels, hung with sensors and cameras. It is controlled by the operator from the remote control at a distance.
A detailed video in which the process of turning this transport into any car is clearly shown:
This unit is removed in motion, and then impose the texture of the desired car, whether it be a BMW, Mercedes, or any other, using computer graphics.
Manage your dream, how come.