I failed it once. Turns out my drivers license was expired by a couple of days so they no longer considered it a "valid form of identification".
You did play by their silly rules and didn't abbreviate things, right?
I had a denial a couple years ago because they said my license was expired, it wasnt. I think its like any job, someone wanted to coffee shop a couple and get out of some work so he could IM that hot blonde down the hall