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
When a teenager went a week without talking as part of a school project, he noticed a surprising side effect: Instead of rehearsing a response to what other people were saying to him, he was focused on listening — and feeling smarter as a result...
A firefighter named Steve in Newport News, Virginia, wonders why in his line of work, and for some police, certain additional kinds of days off after long unbroken shifts are called Kelly days, Kelly shifts, or Kelly time. The term most likely comes...