S.C.A.R. is absolutely terrible. No comparisons to other racing games like Gran Turismo or even V8 Supercars (TOCA). Even those don't count as "sims" but as arcade games they are great fun. S.C.A.R. was no fun to drive, not remotely realistic.
agree with Evan that S.C.A.R. is a very dissapointing failure as a game but it is the only console game that is ALL Alfa! Acquiring a cheap copy as at sale and it might be worth playing.
I have loved the TOCA series - V8 Supercar racer 1, 2 and am about 30% thru V83 and it is good fun but like most - very frustrating at times.
Apparently Forza (XBox only) is excellent.