I'm baffled, I sent in my Form 230 for the moped I found in the garbage and got running, sent in the form along with $6 and holy crap like a week later a plate arrived. The best part: it never expires.
There must have been some mistake, this was just too easy.
Anyway, this was in California. Thanks much to this board for all the info.
Pics, in case anyone's interested: