It's hard to see any effort in the film. There's no comedy to speak of, no real drama and, worst of all.

It's entirely possible that sending the audience out feeling lousy was intentional

it is finally so absorbing because it plays like a lyrical road odyssey that’s also a detective story.

There are moments in this movie where the great movie it could've been peek out... They're fleeting, here, but they're worth savoring, and they happen often enough to make it worth your while.