There are 360 integer lines of Longitude, 180 of latitude.
Including 60 minutes, 60 seconds for each integer then there are:
360 x 60 x 60 x 180 x 60 x 60 = ~840 Billion points identifiable by Degrees/Minutes/Seconds lat & long.
So if each of the 80,000 mp3car forum members enters 10 million points each we'll have perfect file.. within a few inches. Ok we can probably cut out the oceans.. So maybe only enter 3 Million each.
But seriously.... maybe there is a public source for some lat/long/city/state data? (obviously at a less detailed level than that above) I have access to some from my work, but can't share it legally....
I like your idea Sonic... I will poke around to see if there's a place to get data