Cars in the movies and on television have developed their own following, just as the actors who drove them.
In many cases the designers have recieved no credit and no one knows who they are.
The cars however are sought after by collectors.
Some movie and television cars were:
Ghostbusters ecto 1
The Black Beauty
The munster coach
Back to the Future Delorian
Christine
SuperCar
The monkey mobile
Herbie the love bug
Speed Racer
The 1948 TUCKER
The Batmobile
An obscure one was only known as "The Car" One company produced a limited amount of them in 2003 almost twenty years after the movie by the same name "The Car".
It is among the rarest of all movie cars to posses. One will still pop up on ebay from time to time
It was a genious of designed by the same man who designed the 1966 TV Batmobile; George Barris
http://www.ibc34.com/DCHISTORY.html