PC Games I Need To Find A Online Game... HELP :)

Hey guys i have a quick question... here it goes

When i was maybe 13 I remember playing a game that i found on some site. The game was 3D and multiplayer. You designed a car and got to customize colors and stuff like that. After that you could buy wepons and parts for your car. Then their would be a list of online players on the right and you could click the player and challenge them to a fight. You were the one controlling the car and its weapons. If you lost your oppenent gained money. In addition you could also buy "super packs" or something like that with paypal. Its great that i remember all the details but I dont remember the name:D So if any of you know the name of this game it would be GREATLY appreicated. Thanks