Maybe you should have a kid review the movie, you know, from a kids point of view since it was made for them.  Cars may not be as appealing to parents as some other Pixar movies, but the Cars franchise has been my sons favorite since the day he was born, and he is eagerly awaiting the 3rd film.  His friends all love it too, boys and girls. Even more surprising to critics, most kids seem to like Cars 2 even more than the first film.