I've seen it once before and decided "well, if people are saying they like it, maybe I was just having a bad day." So I watched it again.
If I suffered from ADHD and an attention span no greater than ten seconds, I might have enjoyed it. But dear God, most of the movie is nothing but micro-fraction-of-a-second cut scenes spliced together. Even the "action" scenes leave me going "WTF?" Half the time I thought I was going to go into a seizure or just flat out vomit. Hell, I can't even tell what year it was supposed to be taking place in (the "old timey" race scenes were in black and white on a color television, the BadGuy(tm) said something about using a Commodore 64 as his first PC even though he was only in his 40s or 50s, and the old timey black and white racing scene was taking place sometime after the 40's.. whichever decade that was supposed to represent with their modern racing style). So.. again, WTF?
Lousy story, unbelievable world, Spritle was even more annoying than he was in the cartoon, wretched cinematography (sure, it would have at least been pretty if you ever got a good look at anything for more than a fraction of a second), and.. just... blah.
The only thing I liked was the hotel scene with the ninja. And then only when Pops showed up and the camera zooms into his Greco-Roman Wrestling Champion ring, followed by the ninja having his own "oh fuck" moment. That was it. And hell, even that scene was marred by the jarring cut scenes and spinning.
That said, I could see why a really young child would enjoy it. I'm pretty sure it was made specifically for them in fact. But damn.