Most modern phones. Samsung and Apple use address randomization for WiFi. There are tricks through like announcing common WiFi router names. Starbucks. Netgear etc then looking at traffic.

Also your car has wifi and bt. Which prolly doesn’t do that.

If you wanted to position it you shouldn’t get an adr and park nearby. Also I wouldn’t recommend a jammer like any radio you have broadcasting on Channel 5 endlessless.