>Scince Google is making alot of turns, it makes sense if it could download these routes to a GPS. Since most GPS units cannot store 1700 Way Points in a route, Google should make it so you can cut this number down into many files.
In my experience, it actually works better to download it as a track, rather than a route. You don't get the "turn right here" instructions, but at least you know you'll be following exactly the route you planned, and won't be affected by differences between the GPS maps and Google maps - most GPS maps don't have bike paths, for instance.
Incidentally, I've printed out Google routing instructions and used them on a handlebar bag-mounted map holder before - works pretty well. That was only about 30-40 turns, but I wasn't riding across the USA either. The "1700 turns" problem is obviously an extreme case.