SAN FRANCISCO :Tesla will expand its robotaxi service to the San Francisco Bay Area "in a month or two", depending on regulatory approvals, CEO Elon Musk said on Wednesday. Tesla last month rolled out a test of the long-promised service in a limited area of Austin, Texas, with about a dozen vehicles, a select group of passengers and many restrictions, including a safety monitor in the front passenger seat. Tesla will expand the service to "a larger area in Austin this weekend," Musk said on his