One issue to think about if you are planing for increased platinum demand because of its use in catalytic converters is that catalytic converters may have a limited existence. If we ever make the transition to mostly hydrogen and or electric vehicles then catalytic converters will not be required. I know that it is a BIG if but it is somethng to consider if your time horizon is several years.
It looks like we are only 2-4 years away from introduction of this type of vehicle from several manufacturers. There are already some on the road and I am sure more to come. It may be that by the time t