Instructions
Start the PS3 and "Need for Speed: Carbon" game. Wait for the game to ask you to create an "alias." This happens automatically when start the game for the first time on your system. If you already have an alias and want to create another, scroll down to "Career" under the game's main menu and select "Start New Career," then select "Yes" to create the new alias.
Enter in your desired name and character details using the controller and on-screen option menu, then agree to create the alias.
Go back to the game's main menu and scroll down to "Options." Under the option list, make sure that "Auto-save" is set to "On." If not enabled, you will have to manually save your game through your career. With this enabled, your progress will automatically save after you complete check marks in the game.
Go to the "Career" menu at any point during your game if you do not have the auto-save function enabled. Select "Save" from the menu and click "OK" to agree to save your current game.