freeway flyer
n.— «Especially since the effects of Proposition 13 began to kick in with a vengeance, community colleges have become ever more dependent on cheap labor provided by part-time faculty, who are often known as “freeway flyers” because they must drive from campus to campus to make a living. Rules permit part-timers to carry only half a full schedule at any one campus; they make up the difference flying the freeway to distant colleges.» —“Students and teachers suffer when money is scarce” by Eric Caine Modesto Bee (California) June 18, 2009. (source: Double-Tongued Dictionary)
Further reading
Mary Beth in Greenville, South Carolina, wonders: Why do we say four-oh-nine for the number 409 instead of four-zero-nine or four-aught-nine? What are the rules for saying either zero or oh or aught or ought to indicate that arithmetical symbol...
Astronauts returning from space say they experience what’s called the overview effect, a new understanding of the fragility of our planet and our need to reflect on what humans all share as a species. A book about the end of the universe...