Slugging

Have you ever heard of the DC Slug Lines? I think they're a pretty awesome concept!

Slugging is a term used to describe a unique form of commuting found in the Washington, DC area sometimes referred to as "Instant Carpooling" or "Casual Carpooling." It's unique because people commuting into the city stop to pickup other passengers even though they are total strangers! However, slugging is a very organized system with its own set of rules, proper etiquette, and specific pickup and drop-off practices