I also bought the US Version of this title (which is region A,B & C playable) - and it is absolutely fantastic. the overall quality of the visuals (even at 720p) is astounding and you forget that the backdrops are computer generated. The story is good for the boys and may appeal to girls as well - having the whole family around then it's an all round fun one to watch. As with some blu-ray discs there is a small wait whilst the 'Loading ...' screen gets done, but this is fairly short compared to say 'Close Encounters of the Third Kind' which takes a while. I've given this 5 stars, although really I would give it 4.5 just because it's not as universally appealing as other Disney family movies.
The reason i picked blu ray was that i know later on that disney/pixar would release there films on to blu ray, And this is why cars was not upto the par of Monster inc or Finding nemo but it is visually stunning on DVD it will be mind blowing on Blu ray, I cant wait for Pixar to release There other titles onto Blu ray, go blu ray!