Have you read Jack Kerouac's novel 'On The Road'?
If you haven't, you might want to check it out this Summer before the movie comes out in the Fall.

You'll know some of the cast in Walter Salles' film, Garrett Hedlund plays Dean Moriarty (Kerouac's character based on his friend Neal Cassady), Kristen Stewart plays his girlfriend Marylou, Kirsten Dunst is Camille and Sam Riley takes on Kerouac's character Sal Paradise.