I've recently began experimenting with getting my technology on the road with my Harley Heritage Springer. The point to this excerise is to find cool, windy roads to ride and then to navigate those rides with the help of my iPhone.
Let's start by finding cool roads. I like a site called Motorcycle Roads Here's a sample of what it looks like to search the site: In this case, I'm searching for twisty roads in North Carolina.
Here I'll search for interesting roads in North Carolina
GPX files can be imported into (some) GPS apps, which will then provide guided navigation around your chosen route. Some will even lead you TO the route if you are not currently on scene.
You can download Scenic here
or watch the video...