Our Need for Speed: Carbon Trainer is now available for version 1.4 and supports RETAIL.
Our Need for Speed: Carbon message board is available to provide feedback on our trainers or cheats.
Extract the save file editor to any directory and run it from there. I created a directory here for the save file editor:
\Program Files\Electronic Arts\Need for Speed Carbon\NFSCSaveEditor
Run the editor, browse for
\Documents and Settings\\My Documents\NFS Carbon\ANFSC\ANFSC
Then click on tools, then fix, then save.
The save file has all reward cards unlocked, career completed and these 8 cars (4 of them were modified to be "won" cars, so you should be able to add 2 more cars if you want):
Audi Lemans Quattro BMW M3 GTR Koenigsegg CCX Lamborghini Murcielago LP640 Pagani Zonda Porsche GT3 RS