Agreeing to a fee a hundred times smaller than her A-list status could command isn't behaviour typical of your average Hollywood star, and yet for Stewart, the excitement of appearing in a movie version of On The Road was more than ample recompense. "When it was sort of coming to be and I was the right age to play the part of Marylou, I didn't even want to think about it a whole lot, because I was like, 'They're gonna hire Scarlett Johansson,'" confesses Stewart. "Which would've been fantastic, but I just couldn't imagine inserting myself into that equation."

Indeed, even when she ended up taking the role, she'd still have to pinch herself at the idea it was really happening. "I worked with my friend Tom Sturridge, and he plays Carlo Marx, who's Allen Ginsberg," she says. "And I would look over at him, and he's doing this fucking full-on Allen Ginsberg crazy monologue in the corner of some thumping, raving party, and I'm dancing to bebop jazz, and I'd be like, 'Tom, we're doing On The Road. Just so you know? On The Road."