Sure, you could probably see if your cell tower signal is moving, and triangulate it. Probably with just a regular SDR-RTL. Ever better, if you can control your phones signal strength, you could ghost your location by boosting and reducing your signal if and when you detect the tower moving. Bonus points if you can fool the stringray that you are traveling at impossible speeds, like for example the speed of light, around town, ... going through mountains, under water bodies, underground, etc.