I've only been driving my new Roadster 2.5 for a month. But 3 times now (twice at one intersection and once at another), I've noticed that the traffic light sensor has failed to detect the Tesla. I'm not imagining it: I've driven through these intersections dozens to hundreds of times over 8 years in my ICE cars and had never seen the light patterns "ignore" my car before. All 3 times, my Roadster was the only car in the sensor area. It doesn't happen everywhere. I observed once, a couple years ago, a lone motorcycle that also failed to trigger the sensor and sat through a light cycle at one of these intersections. Has anyone else seen this? Any theories? Small size, not enough metal, no ignition coil?