VOA Chinese, Feb. 3, 2010. http://www1.voanews.com/chinese/news/mailbox/CARPOOL-HOV-LANES-20100202-83474342.html
("江苏何先生来信问：'我听身边朋友说，他在美国的亲戚天天上下班和同事合着用车
，难道是美国公司给的薪水太低买不起私家车吗？大家怎么合用车呢？'")
Note: Slugging http://en.wikipedia.org/wiki/Slugging
("Origin of the term[:] The term slug (used as both a noun and a verb) came
from bus drivers who had to determine if there were genuine passengers at
their stop or just people wanting a free lift, in the same way that they
look out for fake coins—or 'slugs'—
