I bought this for my 9 year old sisters birthday after weeks of begging. I believed that she would play it for a couple of hours get bored of it and put it in the cupboard not to be seen for many years. However after half an hour she, my brother, the next door neighbour and I were all playing together this coninued for several hours until she had to go to bed.
One of the great features of the game is that you can do everything with up to four players meaning that we didn't have to wait for ages until good quality mutiplayer levels were unlocked (as in some previous Disney games). It created healthy competition between us and kept us hooked throughout.
Its great fun for all ages, with not just simple racing modes but with others, such as hunter where you hunt down the "baddie" cars using weapons which you collect from Mario Kartesque item boxes. In the races you can do tricks to boost the turbo bar which I think make the game more beautiful to watch.
I found the wheel response excellent and it involves you in the driving making you feel that you are the character (of which there are many) you control.
The graphics are good for the wii and will please any avid Cars fan with extreme detail on the cars striaght from the film. As well most of the Cars are voiced by the original actors from the movie (major exceptions being Fin McMissle and Lightning McQueen). It's good that the game is based on but not strict to the film, this gives a strong relation to it but makes sure that playing game is not just the same as replaying the film.
The game overall feels alot like Mario Kart with Cars characters but this does not take away the pleasure of the game and there are modes which are not in Mario Kart which can be played if you are Mario Karted out.