Summary: This game has the feeling that it was rushed. The controls are so unresponsive that I thought my controller was not working. Also, it has serious bugs that we found on the time we played, was this QC'd at all. This is a lousy value. Spend the money on a good game like Mario Kart.
Summary: This game has SERIOUS bugs.. If you run into walls wrong, it won't reset and you stay in "jump mode" until you reset the game. Also, it doesn't always reset you when you fall of the track either, which means if you are in a race and you fall from a higher level to a lower level then you are effectively 1/2 lap behind everyone with no way to catch up. The graphics are shady at best and you get a lot of hesitation with 2 player mode.
Summary: This is a fun, 4-star, arcade-style racing game on my xBox360; unfortunately the game doesn't play nearly as well on the Wii, probably a porting problem with the Wii's motion-sensitive controllers, but it could also be a system resource thing. I have played other racing games on the Wii that don't have this problem; it's too bad because I really like this game on the 360 but it's not fun at all on the Wii, in fact it's barely playable.