I've been looking at my unifi SSID log recently, although most of my APs are in a secure area (there's a ring of steel), clearly some are close enough to the road to pick up a fair few cars over the previous 24 hours -- 114 Audi_MMI_nnnn APs (and a few like "Frazer's Audi", quite a few "My Skoda/SEAT/VW 1234" too