Convoys,,,,, Every driver MUST have the good directions. I marched in the Purdue Band 1966-1970. When we went to away games, it was a military operation. Ten or more busses, two or three trucks, a couple of private cars.... The student corps (I was a "supply sargent" , helped load and arrange stuff) listed, ordered, spoke to the drivers, and answered to the faculty staff. No cells, some radios, paper maps, memoes, lists of people and gear.
Even a Troop of a half dozen cars/vans/ trailers, 35 people, needs knowledge, organization, cooperation, understandings. Convoys are