That's the count of distinct license-issuing entities whose plates I saw over Shabbos. 39 states, 3 provinces, 1 district, and 1 department. The three provinces were Quebec, Ontario, and Nova Scotia; this is only the second time I've seen a NS plate. Only one Diplomat plate this week; the country code indicates it belongs to Mexico (the other one I saw last week was from Palau).
Anyway, here's the map of the 11 states I did not see this Shabbos:
If you're paying attention, this means that there are only six states I have not seen since last Shabbos: