I imagine that if you trained this on a set of license plate photos, it would be able to enhance license plates illegible to an untrained human such that they're readable. However, I doubt it would be better than a human specifically trained at this task.

I've seen some videos from Cold War satellite photo analysts, and the way they can look at some tiny gray blobs and go "That's a T-64 tank, that's a T-62 tank, that's an SA2 launcher" etc.