Rockstart do know how to make a good game.
Graphics aren't the best, handling not the most realistic, but good fun! Endless easy customisation of cars and reasonable tracks.
Couple of annoying features: level of skill that is required is not too high - circuits aren't very road based, and opponants just plough over grass and through anything in their way. Still enjoyable, and I've probably missed the point having not played the previous versions.
Another niggle is that it takes forever to flick through the cars in your garage/showroom (of sorts!) because each one drives of before the next is shown. It could be a real pain if I get to the stage when I own all 80 odd cars!
These are minor niggles on an otherwise good game. I'm not a "chav" by any means, but even I'm having fun "pimping my rides"!
If you want a good driving game that you can learn to master, get Test Drive Unlimited / GT etc. If you want a fun game where you can customise your cars and live the street-racing lifestyle, get this game (not NFS: Carbon!!)