The forces of safety/market standards that an automobile must conform to is combining with capabilities of the materials available. This makes the easiest/safe

The forces of safety/market standards that an automobile must conform to is combining with capabilities of the materials available. This makes the easiest/safest answers pretty standard. Automobiles combine many disciplines which makes for long development time lines. This further reduces options. Multi-dwelling housing above 5 units will also show this same phenomenon. Coffee makers could be very dynamic market due to fewer dependencies.