Ok here is the situation im in. the old man just picked up some property just outside the city we live near. On it are about 3500 cars trucks ect. He got the 50 acres for an amazing price. His view on it was sell the cars and trucks to a scrap yard for the steel. i have been looking into removing the precious metals from the cats but need to know much more before taking the time and spending the money to do it. From what i have read here the sub zero regia is not a scam but there is way cheaper and much more effective to do this.would anyone know the best way to strip the platinum from them? And is it worth it? how much platinum is in a new cat compared to an old used one? i realize that they are all different sizes and all that but does a newer vehicle contain more than an older one? is there a way to tell if one is better than another?does the odometer reading that the vehicle has travelled distinguish if the cat is worth more? i read here that hydrocloric acid and bleach heated to a simmer is a way to strip the precious metals is this accurate? I would appreciate any info on these questions and have alot more to ha ha. if anyone could please tell me these things i really will make his or her answers worth the time they spend answering my questions, if it even is worth the the time for me to me to do this would be my first question? thank you so much everyone.