(b) Complete the following steps in a what if analysis for the introduction of a just in time* form of production materials supply to a car production unit. Explanation of the Activity Area of interest Sub-systems. (*Just in time is a method of ordering and delivery of stock parts employed by a company, where the company has delivered on a regular, often daily, basis only enough parts for a short period of production. Thus capital that would otherwise be tied up in large stockpiles of production materials is released and cost of storage is avoided.)