I liked it a lot. I did find the story to be a bit cliched, but I still enjoyed it.
I was expecting the story to go in another cliched direction: Lightning McQueen doing something really jerkish in the middle, having everyone pissed off, and having to earn their friendship again. I was glad it didn’t do that.
I loved the minivans from Minnesota. 
Did everyone see the trailer for Ratatouille? That looks great as well.
I’ve noted in this thread (as well as in some reviews) the comment that the plot of Cars is a ripoff of Doc Hollywood. Having now seen both films, I would like to propose the following postulate:
Ahem.
Kiz’s Law of Artistic Plagiarism: If a book, movie, play, etc. reuses the plot of an earlier book, movie, play, etc., but executes it in a manner that is vastly superior to that of the earlier work, then it is inherently undeserving of the pejoritive term “ripoff”.
Cars is a case in point.
Yes, it follows the same basic plot as Doc Hollywood. I was able to figure that out just by watching the previews. But Cars is such a better film in every way that all similarity to plot points in the earlier movie is rendered irrelevant.
I am not a gearhead, haven’t watched an auto race since I was 9 years old, and wouldn’t know a Mustang GT from a Volvo (okay, maybe in a pinch). I have neither seen nor heard a “Larry the Cable Guy” routine despite the undeniable red-neck-titude of my extended family. But I found myself laughing just about all the way through Cars. Sure, it was predictable. Yes, I squirmed a few times in my seat due to the lack of action. But the whole thing just had so much heart that I had to love it.
Am I a bad person if I still wouldn’t want to live in Radiator Springs? I mean, visit, sure…for about 15 minutes.
I think the trip to, and view from the top of, the Wheel Well is worth an hour, at least.
As for “visit, but not live there”… well, shoot, I have the same feelings about the Grand Canyon. 