Whoa, this is one cool, cool movie. I remembered the title a few weeks ago, while i was looking for road movies to watch. This one is pure 70s. It's sort of a thinking man's action movie, basically it consists of the journey of a man (Kowalski), who feels the urge to step on the accelerator to the limit while he's on a business trip to California.
And pretty much that's it. We get some flashbacks of Kowalski, which portray him as an alienated person and sort of explain his rebellion against the stablishment, and also some encounters with other outsiders who help him along the way, such as a biker or an old man he finds in the middle of the desert. But most of the film is Kowalski driving around, making a fool of the policemen who try to stop him and so on.
The film has its problems. I personally found the encounters with other outsiders a bit too long, but we get lots and lots of chases and stunts all the way to the end, and the minimalistic portrait of Kowalski (he barely speaks throughout the movie) works very well.