Ya wanna know something even scarier?
Your OK driver's license number used to BE your SS number! A police scanner could get ya hundreds (thousands?) of 'em, most always with a name, vehicle make/model/tag number, and frequently a home address, whenever the officer radioed dispatch.
Not everything was great back in the good ol' days...
I was one of the first 2,000 in OK to get mine changed from my SSN back in the early 90s. It was funny to watch all the people count / then recount all the zeros in my DL# back when we still wrote checks.