Interesting - they were in the NFS series and TOCA, so I suspect they have a policy of running non-exclusive license agreements. I wouldn't be too concerned.
Don't forget the new SL was the feature vehicle in the GT Concept opening movie.
eg It appears that when EA buys a license they get written into the agreement that no other company can use the cars.
It also depends on the Car company or race series
eg F1 used to be exclusive and that explained why some games came out with unofficial cars. Now they seem to be choosy ie there are 2 or 3 licensed PC games.
NASCAR have almost always allowed multiple companies use licensed cars in their games.
It appears that BMW have sold exclusive licenses per model ie the Z and M series have appeared nowhere but in NFS games recently to my knowledge. But GT3 had that one model. It disappeared from GTC though.
Chevrolet on the other hand appear to stand their ground and say they can go in whoevers game they choose to. NFS and GT3/GTC. The Z06 is in all 3 games as far as I know. And so is the Mustang.
