Problem
Mary works at a large logistics company based in Caulfield, which services areas all over Australia. Her position is division manager. Mary is responsible for all the drivers, designating the trucks to the drivers, and ensuring all the trucks are serviced and maintained. Tom, one of the drivers, is just about to leave for Brisbane in his favourite truck, which he affectionately calls Elvis. Mary tells Tom he cannot take Elvis, as Elvis is due for an important service and Tom is very unhappy.
Mary can tell Tom which truck to take, because she has which kind of power in this situation?