Fremont Assembly was a General Motors automobile factory in Fremont, California in the San Francisco area, replacing the older Oakland Assembly. Groundbreaking for the plant occurred in September 1961, and the plant produced its first vehicle on May 1, 1963. Production continued through March 1, 1982, when the plant was closed after production problems. After closure, the plant was refurbished and reopened as the more successful NUMMI (New United Motor Manufacturing, Inc.) joint-venture between GM and Toyota between 1984 and 2010, and later became the Tesla Factory in 2010.