I love it when a manufacurer gets onto this place.
Dunno about the US riding and planning, but I do realise that servicing the local market is plan 1 in any business plan. But in Oz Garmin maps seem to be most popular. More of a thing about finding a way around a locked gate or an unpassible track even though your came through it a few years ago. Dunno if you guys have lantana there.
So personally I'm a bit dissapointed that the brilliant idea of merging a dash with a GPS (the holy grail of bike info really) doesn't provided this. Unless I'm mistaken and there is a way of creating a map of some kind.
ps: now I've got the oppurtunity, why not provide a volt meter with all your computers?