In the film version of one of the most celebrated works of 20th Century American literature written by Jack Kerouac, Stewart plays the unconventional free-spirit Marylou, the former wife and still frequent lover of Dean Moriarty, a fast-talking charismatic with an insatiable libido. Dean and best friend Sal (Sam Riley), a young writer whose life is shaken after Dean's arrival, take to the road. Marylou frequently accompanies Sal and Dean's travels across the country in adventures fueled by sex, drugs and the pursuit of the " It " - a quest for understanding and personal fulfillment. Stewart spoke with ML during the Toronto International Film Festival where the film had its North American premiere. She shared thoughts on her character's "hard love," how she grew in being a part of the film and how this was the "biggest experience" she's felt on a set. So what was your road to On the Road ? I was 14 or 15 when I first met Walter Salles. I spoke to him when I was 17, I think I may have shot the first Twilight , I'm not sure -- possibly I was about to go do it. At first I was talking about playing another part, so it's been a long time coming. I don't know how I was able to get around that kind of energy, but to convey that I loved this thing in the way [Walter Salles] does and as soon as you get around that energy it passes