Passwords matter if your goal is to get free wifi. But wardriving can also scan for devices ... vulnerable/exploitable devices. It is not hard to track down specific vehicles and security systems, which are the first steps to all sorts of high end property crime.
The uuid for a tesla car's bluetooth is 0xFE96 or 0xFE97. Some targeted wardriving easily gives you the general location of every tesla in a neighbourhood, and then the phones that unlock them. Then you sniff the ssid from the phone, look it up in wigle, and you know exactly what car lives in what garage, along with where the phone is that can start said car. Wardriving isnt all about kids wanting free wifi.
The uuid for a tesla car's bluetooth is 0xFE96 or 0xFE97. Some targeted wardriving easily gives you the general location of every tesla in a neighbourhood, and then the phones that unlock them. Then you sniff the ssid from the phone, look it up in wigle, and you know exactly what car lives in what garage, along with where the phone is that can start said car. Wardriving isnt all about kids wanting free wifi.