Not only a disgrace to the PSP version or the series, but an insult to the racing genre in general.
FIrst off, I'm not sure who thought that the graphics on this game would pass as acceptible, because they are an eye sore. The models on the cars are horrindously bad. If you thought that was bad enough, the crashes themselves are laughingly worse than that.
Gameplay is not that much better. It is functional, but the entire feel of speed just isn't there. Not only that, but despite a better frame rate than the PSP version, it feels slower.
Sound design is generic techno music that is more annoying than anything I've ever heard on the DS.
Bottomline: waste of time, money, and life.