So we were surprised to hear reports of a car spotted around Washington bearing the none-too-subtle Virginia vanity license plate “GOP SPIN.”

Our spy tells us the car is a light-colored sedan driven by a blonde woman. Hoping to identify the driver, we contacted some prominent Republican PR types. They claimed not to know. (Used to be, a reporter could just ask a friendly member of law enforcement to look up a plate for you, but they’re less willing to do that in this age of digital fingerprints.)

And so it remains a mystery — one we’re hoping Loop fans might help us solve. Know whose wheels they are? E-mail your tips to intheloop@washpost.com.