据报道，索夫特（Saft）美国公司获得美国先进电池协会（VSABC）价值3500万美元的两个研究与发展合同，用于开发电车用电池的新技术。据称，新电池的目标是满足协会规定的关于中、长远性能标准，符合《清洁空气条例）｝，即在1998年，美国绝大多数洲的注册汽车将有2％为电动车 According to reports, the U.S. company Saft won two R & D contracts with the U.S. Advanced Battery Society (VSABC) worth 35 million U.S. dollars for the development of new technologies for tram batteries. Allegedly, the new battery’s goal is to meet the association’s long-term performance standards on the medium and long term, in line with "clean air regulations)}, that in 1998, the vast majority of the Americas registered car will be 2% of electric vehicles