I'm curious after reading these posts...the maps that can be downloaded, are they extremely large in size, and where are they downloaded from? Once the GPS pinpoints your location, does GPSDrive automatically download the appropriate map or is it something that has to be done manually?

Also, how is the detail? I'm sure it doesn't have the ability to find the nearest gas station, restaurant, etc. like the commercial nav units, but can it at least show every street, like say in a residential neighborhood for example?

Sorry for the 20 questions...
:-)