Energy Storage Technology (IMAGE) American Geosciences Institute Caption Explore new energy efficiency technologies being implemented, including Porsche's lithium-ion batteries, Toyota's super capacitors and Audi's flywheel system. Credit Kathleen Cantner Usage Restrictions None License Licensed content 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.