ISE Corporation is a leading supplier of hybrid drive systems and components for heavy duty vehicles such as buses, trucks, trams, airport equipment, and military vehicles. It is a leader in electric, hybrid-electric, and fuel cell technologies, and the preferred U.S. distributor for Siemens ELFA(r) electric and hybrid-electric drive components. ISE's proprietary "series" configuration offers unparalleled fuel economy, reduced maintenance and operating costs, a superior emissions profile, better overall performance, and quieter operation.