SAN JOSE, CA-A manufacturer of hybrid buses wants to open an assembly plant here. Proterra LLC plans to unveil a prototype bus, developed through a public-private partnership, at an event tentatively set for Feb. 6 at San Jose City Hall. The vehicle-with a lightweight body, lithium titanate battery packs and a solar roof array-could save approximately 11 million gallons or $45 million, in fuel annually for large-scale users. MORE