Terribly disappointing movie. It reminded me very much in its denouement of Dhobi Ghat, but while Dhobi Ghat left the ending open to imply that peoples stories continue on beyond the frames of the film, here it seems the ending is open because the makers were not skilful enough to bring it to an adept close.
The actors are uniformly good and they deserved better. The script however is just lacking. Certain things are left unexplained to the point of being nonsensical. Yes, trust the audience but don't leave them confused. In a way this is almost the anti-road movie. It breaks genre conventions by showing no growth among the characters, you know as little of them at the end of the movie as at the start.
So let's say 5/5 for the actors. 1/5 on the script.