The graphics are good but it doesn't include Lamborghinis and it has no force feedback so I do not see how it will work.
If you want graphics, then go for GT but if you want the decent cars that they dont want to buy the rights to, go for something like Forza 2.
In my opinion Forza Motorsport 2 seems better because you can customise your cars and it does include Lamborghinis (if you haven't guessed I am a Lamborghini fanatic) wich is enough to make me buy it, as soon as i get my 360 of course.