Personally I think Carbon is horrible. The drifting is incredibly antiquated and simple. If you tried drifting in Forza or Gran Turismo, the same way you do in Carbon, you would go careening into a wall.
The Autosculpt feature is stupid too. Might be artsy and cool to morph the look of your car, but it's not that great if you ask me. I would rather just choose from sick bodykits instead.