Just got home from seeing this (3D version). I think I read a review that said some thing like: "It's like being slapped in the face for two hours. With a car". I think that sums it up, in a good way.
There's very little dialogue, it's basically a two hour car chase, two nitrous oxide filled, in your face, hours.
If you liked the Road Warrior (Mad Max 2), you got to see this.