There are at least 150 wireless hotspots on TTA's 302 bus route between Cary and NCSU. Made me wonder if there is a Google Maps / Wifi location mashup. Of course there is: gWifi. It's pretty lacking, however. If I happened to have a GPS device hooked up to my laptop on the bus this morning, I should be able to upload the resulting log of captured signals and coordinates for others to benefit from.