It's fun crashing everything! Not the best racing game in history, but has no flaws really...
FlatOut has the best graphics to date, however. It's beautiful and brigh even on PlayStation 2. The racing system is also easy. It's not too easy to handle and is definetely no arcade, but it's no simulation either. It's a good mid-point.
FlatOut also has some fun minigames. Most of them base on the trick of throwing the driver through the windshield. But there are also Demolition Derby races and 8-tracks. It even has a simple tuning feature on it too!
I think every racing game fan wants this. Even though I'm not a big fan of cargames really, but this really appealed to me! And it has a split-screen multiplayer too! Only major flaw is that after few months, it gets a little boring...