I like the car universe and it is understandable that one decided to do something different for the second entry BUT it takes too much time focusing on Meter, the dumbest and most annoying of the car characters. It also lacks the charm and wit of the original and removes plot for a idiotic spy story. The first truly "below average" movie from Pixar. It seems more suited as a TV special on Disney Channel.
After enjoying Cars I went on to watch this and I didn't hate it but the warmness from Cars seemed to be missing from Cars 2. I have to say, this is my least favorite Pixar film which is not to say I didn't enjoy it at all, it's just that the standards are usually so high. Kinda disappointing but it wasn't as bad as people say
Pixar's first dud feels more like a cynical money grab, lacking the heart of their usual work. The CARS conceit goes too far as the simplicity of the original is replaced by loud, over the top spy hijinks that just don't fit in the world they had previously created.