It is unfortunate that the movie performed as poorly as it did, as the game is one of the better arcade-style racing games that have come out in a long time. The game has echoes of F-zero in its style and use of car-fu, essentially beating Nintendo itself to the punch of delivering high-speed futuristic racing to the Wii.
Its status as a movie game is made a moot point, as not only does it stand well on its own but actually further fleshes out the arcade racing genre with its multiplayer championship progression and entertaining car-fu attacks. It has a few flaws, including a lack of online play, but ultimately it is one of the better racing games found in the Wii to date. Go Speed Racer. Go, indeed.