You walk to the mailbox, shuffle through the usual assortment of bills, advertisements, and catalogs, and spot an envelope from the California Department of Motor Vehicles.
You open it. The DMV wants to reexamine your ability to drive safely.
Wait. What?
You haven't asked for this. As far as you know, you haven't done anything wrong. And then comes the question most of us would probably ask:
Who reported me?
You may never know.