About the General Lee, we cannot delete comments posted by people who post pictures just saying "that pic is not from the series". The purpose of comments is letting people discuss and post things. That include images from movies/series, but any more or less related things, like replicas etc. I do not see a problem with that.
I guess that you refer to pictures posted by wasserspeier at the end of the page? That was just to illustrate an article which was still a little related to the car, even if it is about the cars of the movie and not those of the series.

About multiple cars playing one "character", that's how we list these. In come case they use lots of cars, we can't list all, having multiple times the "same" cars would look "messy" too. The comments are there to clarify that and provide pictures of the various cars, if needed.