Can you track a analog signal

Analog is a thing of the past,but not for our military,they use it for communication purposes because it is less likely to be tracked,this is why all analog went digital,now for his car to be a 2005,there should not be any analog systems in it,the stereo would be digital in this model and has a serial number on it,but this would not even be trackable because it is only and input system unless it has sirus or xm radio,analog can be tracked but only if has and out put signal and would have to be pretty close to it,sorry for the bad news,but i am still wondering what is analog in a 2005 except and old school dial clock,