I have a friend that works there and a year or so ago mentioned that end of quarters are crunch time. Not a good time to schedule a vacation, call in sick (when not really sick) goof off, take long lunches or dawdel around.
The focus is getting the cars delivered, clearing out storage, moving CPO and demo vehicles, and generally wanting to put a good face on the company.
Service centers will be working long hours, financing will being pushed through, delivery schedules tightened up, and customers asked to accept deliveries before the end of the quarter.
They also know that March 31st things will be getting hectic with the launch of the Model 3. Sales, marketing, and internal management will be super busy handling the critical launch of the new car. Everything they can get off the desks at the end of the quarter will free up time and talent for this new, and higher production model.
We do this also where I work. Big push to get money collected, deliveries made, inventories down, and production is optimized. Not all that unusual in the corporate world.