Way too short.
This game is cross between car battling and an RPG. You play as Joe Todoroki, a 16 year old car battler looking for his dad. You start off doing jobs for people, like finding lost items, fighting other car battlers, delivering items, and a lot more. Later, you can enter a tournament to win a new car, plus tons of prize money. When you get on the road, you can blast the other cars with your machine gun, laser beam, flamethrower, buzzsaw, or whatever else you equip you car with! You can also give computer cards to your little robot friend, Pal, to give your car special overdrive abilities. The game's pretty short, but after you beat it, there's still tons of stuff to do. I recommend this game to everybody that has a GBA.