It could be so much better...
The game has few tracks (each cup and world has only three of them).
You don't unlock anything by winning the first place at the cups (even a battle arena, like CTR), highly diminishing the replay factor.
But the game have some great improvements:
The tracks that the game has were greatly designed; some of them with right to horizontal loopings and cylinders Big Blue (F-Zero X) style.
In certain point of view the game is more challenging, that is good for advanced CTR players.
The Adventure mode has many funny CG cutscenes.
Great Graphics.
Concluding, Crash fans will like this racing game, but don't expect for a game which will entertain you for a long time.