...that Cars 2 has ended up being the first Pixar film to receive a "Rotten" rating from the Rotten Tomatoes site. Making a sequel to that first film was always going to be a dicey affair. It was by far their previously weakest, especially in terms of having a solid plot; it was pulled up mostly by some fine voice work (including by, I hate to say it, Larry the Cable Guy).
But, they had to stumble and fall eventually. I suppose I'm glad it was an attempt on a franchise that I don't care about. Rather than, say, a Ratatouille Deux.