Nobody Walks, from director and co-writer Ry Russo-Young, gets right down to business in its scant 82 minutes. No sooner do we meet Martine (Olivia Thirlby), a 23-year-old Brooklyn artist just off an LAX-bound flight than we see her making out with the guy with whom she has headed to the parking garage. It turns out they’ve only just met, and while she’s happy for the ride, so to speak, that’s all. I guess she doesn’t have much time to waste either.