Share the QR code with wechat scanning code < / P > < p > to friends and circles of friends < / P > < p > Tesla CEO Elon Musk said on twitter on March 3 that the California plant is still operating at full capacity and is considering substantial expansion. Musk said that the California plant is the largest automobile factory in North America, producing two-thirds of electric vehicles in North America, twice as many as all other carmakers combined