You know, boy versus girl. But she's a tough warrior, so I almost treated it like unisex. But it makes a difference how tall the actors are, because I needed to know that if Olivia Wilde sits in a car that the director, Joe Kosinski can still get the angle he wants, as opposed to maybe in another vehicle than Jeff Bridges has to sit in. So that was fascinating. Because in a real car you change everything and adjust it. But here you have one shot.