http://environment.newscientist.com/channel/earth/dn12141-giant-microwave-turns-plastic-back-to-oil.html A machine (read:overpowered microwave) that removes hydrocarbons and produces gas and diesel grade fuels. If you don't want to read an article today you can just watch a video of the process here:
http://www.carbonrecovery.com/Videos_GRC.asp