I'm wondering that myself, and trying to find some answers. I loaded the USA "All-in-One" Traffic Cams and the Wi-Fi Hotspot on to my Garmin nuvi 500 this morning. Traffic Cams loaded well, but the Wi-Fi POI is no where to be found. I was under the impression that you could load multiple POI GPX files. So I am just as confused. I will keep searching for answers and post what I find here. Please do the same.