A production associate working on a powertrain line at Tesla in Fremont collapsed and died early Wednesday morning. Now the state agency that oversees workplace safety is investigating into what happened. Cal-Occupational Safety and Health Administration spokesman Peter Melton said that the car manufacturer notified his agency about the death and state investigators are in the process of gathering more information to determine the work-relatedness of this event and whether to conduct an inspection. A powertrain is an improved motor, inverter and gearbox, according to Tesla's website. The identification of the employee was not given. About 6:30 a.m., at least...