With Roadtrip Mixtape you can create a mixtape of local artists for your roadtrip. Type in the name of your starting and ending points, and the application will create a playlist of music by artists from the area you are traveling through.
Each leg is represented on the map by a green dot. If you click on the green dot you'll see info on that leg including a list of artists along with the city that they are from. For an explanation of how it works, see the faq.