Broken Flowers

At the risk of becoming a blog about movies that I've seen... I went to Broken Flowers a couple nights ago and really enjoyed it, but there was a theme there (i think) that I wanted to see if anyone else picked up.

I noticed on his address that the state was NT, which is what made me think about this. Everytime he went somewhere new the license plates were kind of blurry and didn't say a state name on them. So anyways, he keeps flying all around the country, however every place he goes looks the same. I thought that maybe they were using a lack of definition in the places he was going as being symbolic of the lack of definition in his life?

Thoughts anyone?