The view of Tesla Inc's U.S. vehicle factory which is open for business, despite an order by the Alameda county's sheriff's office to comply with a three-week lockdown in the San Francisco Bay Area, in order to rein in the spread of coronavirus disease (COVID), in Fremont, California, U.S., March 18, 2020. REUTERS/Shannon Stapleton

(Reuters) - Tesla Inc TSLA.O is preparing to reduce staffing by about 75% at its lone U.S. assembly plant after initially resisting an order from the local sheriff, Bloomberg News reported on Wednesday, citing a county spokesman.