I see now, thanks. Though I believe that if Google is the adversary, they have ways (only a guess, but some kind of correlation between GPS location on mobile

I see now, thanks. Though I believe that if Google is the adversary, they have ways (only a guess, but some kind of correlation between GPS location on mobile while connected to Wi-Fi and http requests could be one) that make the "wardriving database" unneeded, I mean, there should be a constant updating of this database, or it would turn out pretty much obsolete soon.