Not for everyone This is perhaps the first time I have been let down by the review scores. As some others had pointed out, the scenes dragged on for too long, with some scenes having in my opinion serving not much function at all, such as the extended dashboard scene; the start of the movie; and when she looked into the rear view mirror. Basically the first half of the movie was her in her van driving. Whilst I agree some scenes should be extended to build up suspense, tension, thoughts etc others were slightly excessive, you don't really need her to pick up so many victims to understand what was going on. The movie could have explored and focused on her change a bit more instead.
I understand that this movie relates to a book closely, and divides the viewers as a result. For people who have read the book, this would appear to be a masterpiece compared to people who have not read it, who would then find it confusing and boring.
This movie targets specific audiences, if you have not read the book, hate scenes that dragged on or do not have an open mind before you start the movie, you will most likely find the experience unpleasant and vice versa.