FREMONT, Calif.—Tesla’s new tented facility isn’t just a new temporary “assembly line” but is seemingly the first phase of an entirely new building, dubbed “Factory 2.0.”

On June 16, CEO Elon Musk publicly announced a “new general assembly line” made with “minimal resources.” However, a January 2018 geotechnical investigation report newly on file with the city building permit office notes that Tesla has plans to build a 500,000 square foot “multi story building north of the existing North Paint Building.”