Ferry commuting on the Potomac

I don't care so much about this, as I am more focused on transportation and mobility within the core, but I think working on such modes as ferry commuting is fine. It's particularly interesting when you think about how rivers and bodies of water were the main transportation routes in the country into the early part of the 20th century.

The Manassas Journal-Messenger reports, in "Ferry boat trial deemed a success," about a test of ferry service on the Potomac. (Thanks to Bacon's Rebellion for the link.)