Global warming, pestilence, famine, and meteors commence pummeling the earth with frightening force.
Or, we hope Garmin ups the map segment limit by that point. Though with 2 GB of memory, we can fit the entire DVD of any 1 of Garmin's map products. Loading more than 1 at a time becomes clunky as you have to enable/disable each map product on the GPS; you can't see more than one at one time anyway (for the same area). If Garmin is able to up the segments to some much higher number, and much larger memory cards do get released, I hope that Garmin does find a way to allow multiple maps to be shown over eachother at the same time, otherwise even unlimited memory isn't particularly useful.