The song is about driving by yourself at night into the unknown and feeling free.

VOA: special.2010.05.28

- "She lived unknown and few could know"-- how can she be unknown if few know anything about her?

她不为人知地活着，鲜有人知道她“,如果有任何人知道关于她的任何事情,又怎么能说他不为人知呢？

耶鲁公开课 - 文学理论导论课程节选

But Eric Halgren points out that despite our growing knowledge, much about the human brain remains unknown.

VOA: standard.2010.01.15

Eric Halgren says, despite our growing knowledge, much about the brain remains unknown.

VOA: standard.2010.01.28