Online multiplayer racing game?

i wanna find a fun racing game that multiplayer. sort of like a runescape or world of warcraft for cars. i wanna be able to upgrade for my cars or bikes whatever. something that saves also that needs a username and password. anyone know anything?Online multiplayer racing game?
Oh!

Theres;



DriftCity - (drift.ijji.com)

SwypeOut - (www.swypeout.com)

ProjectTorque - (project-torque.aeriagames.com)

TrackMania - (www.trackmania.com)

StreetChallenge - (www.streetchallenge.info)

Hovorun - (hovorun.gamersoxygen.com)

KartRider - (kart.nexton.net)

Team Revoluxion - (Unknown)



Enjoy, I know I will!
Google search Trackmania Nations, it's great, it's free, it's an MMO, it's got physics, and it's free. Also, go here for free stuff. http://www.points2shop.com/index.php?ref=ipsofonicOnline multiplayer racing game?
Maybe this will help you:http://www.gamenet.com/game/deathvalleyr鈥?/a>
Drift city at www.ijji.com

erm... Project Torque

thats all i have...Online multiplayer racing game?
vDrift

traffic cameras

vance and hines