Tesla announces big plans for cheaper iron-based batteries

Tesla Inc. is planning to install iron-based batteries that are not only cheaper, but less of a fire hazard, in a version of an affordable electric vehicle and a semi heavy electric truck, according to reports.

DOJ wants Tesla documents on automated driving

Tesla Inc. is already facing multiple investigations by the National Highway Traffic Safety Administration for problems with its two driver-assist systems, Autopilot and “Full Self-Driving.”