This game is basically a joke. Rather than repeat, this review pretty much sums up why this game isn't worth more than 20 bucks.
admiral_picard's reader review of Need for Speed: Shift for Xbox 360
I wouldn't recommend it. It's fun, but there are too many problems.
And he doesn't mention that you will spend more time on load screens that actually playing the game. I've played xbox and xbox 360 since they came out, and I've never met load screens this long.