Extended driving range (EDR) for driving (IMAGE) Faculty of Sciences of the University of Lisbon Caption Extended driving range (EDR) for driving. The background represents non-shadowing EDR. Circles represent the urban solar extended drivingrange. Credit Miguel Centeno Brito et al. Usage Restrictions Attribution is required. License Original 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.