AT EA forums, they just confirmed that there aren't any plans to have a "EA Moderator" for the PC version of NFS Carbon, so the only way to unlock this part of the reward card is with a trainer.
Using a generic trainer, and NFS Carbon Collectors Edition, patched to 1.3, I found the online reward card data as a series of 16 bit values starting at hex offset 6B45BC4 with the beat a moderator value at 6B45BE8. I'm not sure if this address moves around depending on mode or number of cars in your career and my car garages. I set the the byte at 6B45BE8 to a 01, and then ran one race online to unlock the GT3.
Would be nice to have an official trainer to do this.
Well now, since this was by far, and I mean réally far, the lamest release in the NFS series how come you're surprised ? I don't get it.
Lamest? Lol, you're in way over your head man, how can you say that? Unless you're a n00b of course!
Agreed. I'm really upset that the whole game got different from what it was in Most Wanted, but I don't think its too bad that it has to go down there. I'd rather let the newer games down there and than put Carbon because I think that the new games have better tuning and cars but they're a tiny part over done.