Currently the hosting is paid by the Google ads, it won't be a money problem to move to a bigger server (as the current one is not the cheapest one anyway).

The goal of the site was not to list every car visible in a movie, but the cars that had a role in a movie. This was extented to background cars, but I think it is better to keep limits on that. In the same way, we didn't extend to games (unlike IMDB), and didn't extend to trains, planes or boats.
The only mistake was to extend the site to cartoons and computer-generated cars