A friend of mine in Washington, DC forwarded a link to me today, and asked me if I was aware of "slugging."
Since it's a practice that grows out of areas that use high-occupancy-vehicle (HOV) lanes (Chicago does not), I'd never heard of it. HOV lanes put non-carpooling drivers at a disadvantage. It is a symbiotic relationship; drivers need another body to utilize the fast HOV lane and "sluggers," as they are known, need a free ride to work.
Existing in some form in many cities within the larger category of flexible carpooling, slugging is the most base variation, and is ad hoc, meaning no formal or prearranged meeting place exists. Rather slugging queues and pickups evolve out of the commuting patterns of the drivers and sluggers.
Slugging has its unofficial...