Marketing & Advertising Placement Analysis - 1940s

Check it out: https://www.youtube.com/watch?v=XpZfkh6KyH4

Some 70 year old advertisement trackers. Down to a science of monitoring what people are looking at, and where they're going to and from. And what methods do they use to figure out the most profitable billboard placement? 9:00 "...by jotting down the license plate numbers of passing automobiles and tracing their home addresses through the automobile registration records"

I just thought it was interesting and just as relevant in tactics as what you'd see today, especially with online advertisements (which depending, can be even worse).