Things you might not want to know:
I tried HTP and found it to be as useless as the 2008 Honda GPS.
Planning a trip takes a long time and therefore should have a minimum of 'surprises,' some of which are impossible to avoid.
I had the best experiences with the following:
1. Create trip with Google Maps to get an overview.For me, Google has by far the best maps. I find them always to be 'up to snuff.
2. Conduct a virtual drive-through in Google Maps.
2. Transfer trip into Google Desktop Maps.
3. Export as kml file.
4. Import into Base Camp.
5. Convert from kml to gpx.
6. Transfer to GPS.
This is why I think we are throwing our money away by paying for external GPS units like those mounted on motorcycles nowadays.
The GarminV GPS on beemers is about as good as I ever seen and my GoogleMap works much better and finds ALL addresses I put in there in spite if they are in the boondocks. Everytime Garmin could not find an address for me, Bam, GoogleMaps on the cell...perfect.
A cell phone is much easier and more effective to use as a guide source for touring.
No one appears to have mastered the user friendly features on Google map in order to put them on a router program. My guess? Google has the money to pay the top notch coders...the kind of money no one else has.
A giant star blew up, elements combined, a long time passed and then, there you are. The mother of all mothers, even yours, is a supernova.