I had a game of it yesterday and, oh my, it is great.
I've been a fan of the Mario Kart games ever since I bought the original on the Super Nintendo in 1992. It was such a favourite from my childhood that I remember the exact day I bought it - Boxing Day!
The most recent version I bought was for the Wii on the day of its release. I loved that, too.
This one, though... This is a lot better.
More characters to choose from, the courses are great to look at and more.
Those are my first impressions. I have some racing to do...