Quote:
Originally Posted by mr_m
Wifi:
Wi-Fi
Digital compass
Wifi/Cellular:
Wi-Fi
Digital compass
Assisted GPS and GLONASS
Cellular
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"A-GPS additionally uses network resources to locate and use the satellites in poor signal conditions. In very poor signal conditions, for example in a city, these signals may suffer multipath propagation where signals bounce off buildings, or are weakened by passing through atmospheric conditions, walls, or tree cover. "
http://en.wikipedia.org/wiki/Assisted_GPS
I'm assuming the already overpriced 329$ iPad mini would be the only "logical" install here since the 3G one is 459$ (you're now in dedicated HU territory). A-GPS won't help you trying to navigate while driving.