I saw this movie about 6 months ago and enjoyed it more for the "journey" moments than for the story. I agree it definitely had that indie flick type ending. I watch a lot of indie flicks just for that reason though - they don't always wrap up every loose ending in the last 5 minutes so that everything is perfect. Sometimes they end up on a down moment, sometimes they just end (TGI over...).
This one was entertaining throughout.
Unrelated: If you have the option of watching another indie flick called "Rubber", save that 1+ hour of your life. I know I can't get it back.