The friendship between Turbo and Tito is really heartwarming and involving, and the volte-face of Guy Gagné doesn't turn his "motto" (No dream is too big, and no dreamer is too small) into something less meaningful.
Though, I cared less for the snails, who all lacked a personality, and found the human characters to be way more enjoyable. The Mexican adult version of the small Asian boy from Up was a good choice, as all the humor comes from him. The rest of the characters are not that interesting. He and his brother, who looks like Angry Joe, could've had way more scenes together.
It also bothered me that the main character's transformation basically turned him into a car, instead of just fast, which was just stupid in my opinion, and that his own brother was needlessly negative 99% of the movie. It was tiresome. Much like seeing snails having a smug face. And another top racer-character being the villain of the movie. I've already seen that in Cars, Planes, Herbie, and countless of other movies I haven't mentioned.
What I also didn't get is why the other racer snails were so driven on helping the main character; nothing they said to each other implied they were friends.
Anyway, it's an alright, but cheap movie. It'll be good enough for your children.
131116: See prior message. Still the same.