Apparently it is a thing in DC, known as "slug lines": http://en.wikipedia.org/wiki/Slugging http://en.wikipedia.org/wiki/Slugging The idea is that by pickin

Apparently it is a thing in DC, known as "slug lines": http://en.wikipedia.org/wiki/Slugging http://en.wikipedia.org/wiki/Slugging The idea is that by picking up people, you can drive in the HOV lanes.