Tula Technology, Inc.: Tula's DMD Improves Electric Motor Efficiency While Reducing Rare Earth Materials in Battery Electric Vehicles nd International Vienna Motor Symposium Tula Technology, Inc., a leader in propulsion efficiency, reported today at the International Vienna Motor Symposium that their product Dynamic Motor Drive (DMD) mitigates efficiency losses of electric motors while significantly reducing reliance on rare-earth materials. DMD's application to electric vehicle motors has the potential to increase range while using less energy. This press release features multimedia. View the full release here: https://www.businesswire.com/news/home/20210429005254/en/ Tula Technology's DMD prototype test vehicle improves efficiency while dramatically reducing the need for rare earth materials in battery electric vehicles. (Photo: Business Wire)