Driving the same route to and from work for almost 20 years extreme boredom causes me to pay attention to everything, especially my fellow wage slaves stuck on traffic and their bumper stickers. I left the house 10 minutes early today so I was able to see cars and drivers, as well as bumper stickers that I do not normally see.
Like this unusual cryptic one:
The addition equals 39. DNB? Duns & Bradstreet?
I did find a listing for 13/13/13/D/N/B which appears to be a South American corporation. Perhaps based in Panama. However, there is a distinction between a forward slash / and a addition sign +.
Some Blogging Guy