FREMONT (AP) — Three Tesla Motors employees were injured Wednesday after an aluminum casting press failed at its San Francisco Bay Area factory, officials said. One employee was seriously hurt and two other sustained minor injuries when the low-pressure press spilled hot metal shortly before noon, said Greg Siggins, a spokesman for the California Occupational Safety and Health Adminstration. "Hot metal somehow burned the workers," said Siggins, who added that there was no fire inside the plant.