I do not see why for cartoons we should use that. Even if the car is drawn it is still representing the model of the car.
A photo of a car is still the car?
A draw of the car is still the car?
About the Cimbra SS, it is not made for movie, only heavily modified.
The base of that car is a kitcar really sold:
http://www.nova-international.net/articles/cimbria01.wmark.jpg
(though I am not sure that the car of the movie is based on that one...)
In the case of the batmobile, since GM was making ads like if they made the car, why not use their name as make? Like the GM car of Demolition Man or other futuristic vehicles.
I am not sure that a search on "made for movie" would be so useful. Or you simply have to do a search on "custom" category to find heavily modified and custom-built cars.