Shopping Bags to Oil (image) University of Illinois at Urbana-Champaign Caption Used plastic shopping bags can be converted into petroleum products that serve a multitude of purposes. Credit Julie McMahon Usage Restrictions Image may be used only to accompany stories about the research described in this release. Credit required: Julie McMahon. Thank you. Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.