You will have an extra $10,000 when you start NFS:MW. If you have a savegame of NFS:U2 on your PS2/XBox/GameCube, or have the game installed on your PC (only a savegame wont work!), Left, Right, Left, Right, Up, Down, Up, Down Up, Down, Up, Down, Left, Right, Left, Right Up, Up, Down, Down, Left, Right, Up, Down Unlock the Pontiac GTO (Doesn't seem to work) Unlock all the cars (Doesn't seem to work)
All cheats must be entered at the screen where you have to press the start button to continue.