Do the ferries that run between towns on the Rhein (between St. Goar and St.
Goarhausen, or between Bingen and Rudesheim, for example), run back and
forth continously, or is there a set schedule with just a few crossings per
day? Fares? Do these ferries all accomodate cars? I am assuming these
ferries are separate from the boats that cruise up and down the river -- I
have those schedules. I am just wondering how easy -- or not -- it will be
to get from one town to another across the river as we explore.