Another "late" one I saw yesterday - 4EVRL8
A lake one seen in Moultonborough this past weekend - either HRMTCVE or HRMTCV (tough to read as it's going by you).
My friend out in California had a Red Sox related one - MFY1918. This was before 2004 but she's kept it. When she went to the California DMV and asked what it was, she said it stood for My Favorite Year and the 1918 was when her grandfather was born.