With current technology, the rest of it is done to make greens happy and companies look concerned.
Although, there was an interesting article in Pop Sci this month about a device that used microwaves to recover petroleum products from things like tires and plastics. Basically, it's just gasification. Technically, it's not recyling, but it's better than putting them in a landfill - might be interesting to see if landfills could be mined? Per the article, it was an energy efficient process, as well.
Struck me as interesting.
that is interesting....it costs more to recycle plastic than it does to buy new plastic...until it becomes cost efficient, it is just a lib feel good thing...