Lisa,
The primary reason that Verizon is reluctant to provide coverage maps is the relative scarcity of the coverage. Plus, no one is ever going to be able to connect at 19.2K using the current technology. 12K up to 16K is reasonable as long as the caller is near a network hub.

For much of the area you are planning to travel in -- you are not going to achieve data rates in excess of 9.6K as long as you are in a wireless mode unless you use one of the satellite systems.

The mobile office is a re-worked of current digital systems and the backbone does not extend much beyond the center of major urban areas.

RW