Gah, for the first time in my life I forgot to renew my car tabs - because when I changed my address with the WA DOL they only updated it for my driver's license and not my car registration, and for some damn reason the USPS didn't forward my renewal notice either.
I'm amazed I haven't been pulled over for this yet; I guess I somehow managed to avoid cops for the past week. Not that there's a lot of cops out in White Center and I rarely drive to Seattle (like I did today...)
So yeah it turns out the forwarding request never came through, go figure. Oh well, no real harm done, and I’m glad it got resolved.