Bad Bad game that has some good points.
First the good things.
The game has ok graphics (reminded me a bit of Scream from 486PC days), ok sound. The sense of speed is good. There are many races available, after you unlock them, and plenty of cars. The music of the game is a mix of techno music of sorts, and for me the best part of this game.
Now the bad things.
Collision detection SUCKS. You touch an enemy car just a bit, and there is no crash, there is no slowing down of the opponent, it is always your car that almost stops like it hit a brick wall. Imagine this, racing, the finish line is very close and you are driving next to an opponent for the first place that you must win... you are going at the same speed, perhaps you are even going just a bit faster, you can see the finish line, you know you can win this and finaly (after many efforts) unlock the next set of races. Then the two cars get closer to each other, not necessarily touch (every cars has a force field of shorts lol) and so they touch each other's forcefields and it is a mirracle, it is your car that slows down while the enemy wins the race. Repeat the above 1000 times, it is only your car that suffers, you begin toget annoyed with the game.
Other bad thing is that since all the races require you to get first place to unlock the following set of races, you have to repeat th same exact cirquit a lot of times, why? Well, apart from the previously mentioned problems, there are parts of the circuits that are too tight and with too many bends, and also have enemy cars, take a wild guess how "fun" it is to play them.
If you want a good racing game , get Mario Kart DS, if you have that and you want something better/different, get another console or wait for another Mario Kart game from Nintendo. As I said before I gave up on my DS and this game was one of the reasons.
You might like this game, but chances are you won't.