Originally Posted by staehpj1
I think that it could be a replacement for maps and cyclocomputer, but still think that maps and computer are still easier and simpler to use.
That said I am considering taking a mapping gps for "off route" stuff on the transamerica.
If I could load all of the routes and waypoints at once I think I might use it. more, but it would need to be updated about 12 times on the trip to load waypoints and routes. If I decide to take a laptop I might rethink this and use the GPS as my primary method of navigation. I haven't ruled this out entirely since with a group of three sharing the laptop the weight penalty is less.
My Garmin Legend Cx can store 50 routes each containing 500 waypoints. That's enough to cover several states but if you really need more space, a PowerPC (handheld) would do instead of a laptop. You could also carry the original CD and load the program at a library. Then upload your files from that computer.