I have tested every car, fully upgraded, to show you all an accurate description of all the drivers in the game.

https://docs.google.com/document/d/1kMg0IfbLoUiFwwNPSTPr1OkQUy6d7wmL6FxbYT6i-3Q/edit?usp=sharing

How do you make your game look that great and smooth on PS2emu?

When you start a profile and select your racer, stand on Sebastien Noire. At this moment, you have to press the Right arrow and cross in the split of a second. It will allow you to play as Underdog since the game thinks you were about to choose Noire, whose unlocked but you selected Underdog, which tricks the game into letting you play as him