About the police car, I agree with Vilero: the current picture is better. Indeed it does not show the full car, but it stills shows more than a side view in the dark.
About the other cars: some were cropped. For example the Fairmont or the LTD. So I'd say that it is normal to replace them, but the new pictures provided look rather blurry, so the cars are not very visible on them And for some it must have been possible to find better shots, e.g. for the Pinto.