>>18031330Platinum in Old Jeep catalytic converters were especially affected since their catalytic converters were above average on platinum on account the engines optimized for desirable full band torque, and they gave up on pursuit of a clean burn.
Also some kid figured out that if you sweep up dust next to an interstate road that sees 24/7/365 traffic, you can smelt that down to platinum. Teenager literally swept the sides of the interstate for fine dust and after spending a few hundred dollars worth of equipment and chemicals and process, came away with $50 worth of platinum and precious metals.
https://www.youtube.com/watch?v=_u3WfZa_9ko 