While testing our LI, AL and M-20 today with a couple of PL2s, one guy seemed very concerned what we were doing and went so far as to pull over and watch us for several minutes. Now here is the scene, my wife, 11 year old and I were doing runs in our respective vehicles with the LIDAR vehicle off the road and the test vehicle making numerous runs to test for JTG and JFG, same scenario many of you have done before. My wife noticed that he used his cell phone, watched us for about 15 minutes and drove away. We were there for about another 30 minutes and left. My question is this, is it illegal for us to be using a LIDAR gun not being LEOs etc? I know in some states, the use of a police radar is illegal except with an FCC license which both my wife and I (Amateur Radio Licensees) have including privileges on X and K Bands. Any care to chime in here please?