Kerouac's Road: The Beat of a Nation.

Mixed bag or not, films like “Keroauc’s Road” feed on the novel and the novelist’s mythology. And when they’re on their game, they get at what Kerouac’s sensory-overload novel tapped into that is quintessentially American — mercurial restlessness, eagerness to live a life less ordinary and that core realization that staying in one place — even a New York, New Orleans or Los Angeles — is no way to get to where you want to go.

The film is at its best when it homes in on the literary criticism – bringing in articulate readers of the text such as novelist Jay McInerney, who details the effort that went into making it look thrown together in a matter of weeks.

The film does not fully succeed, though that’s a tall order for anyone. Too many things need wrapping up by the end, so the concluding rhythm drags. There’s just too much to say, and that always leads to saying less than you might want.