SAN JOSE, Calif.–(BUSINESS WIRE)–Efficient Drivetrains, Inc. (EDI), a global leader in advanced, high-efficiency plugin hybrid electric vehicle (PHEV) and continuously variable transmission (CVT) solutions, today announced a high-profile partnership to develop a first-of-its-kind, Class-4 vehicle that combines the benefits of compressed natural gas (CNG) and PHEV technology.