Why they probably didn't use the entire car:
Fifteen years ago, my car was used for a Casio Camera commercial. (they wanted a car the same color as the featured camera)
Mercedes-Benz must be either very expensive for rights, or a real stickler regarding their logo/brand. Anywhere the logo appeared was deleted- like on the hub caps, rear deck, front grill etc. Seemed strange to me at the time but now I understand.
Great Pictures of your car
jb