US auto safety regulators said Friday they have opened an investigation into whether Tesla's recall of more than 2 million vehicles announced in December to install new Autopilot safeguards is adequate.

Tesla has reportedly signed a deal to procure semiconductor chips for its global operations from Tata Electronics, which is part of one of India’s largest conglomerates, the Tata Group.

Tesla Inc. shares have shown signs of life in recent days after this year's extreme slide, but investors lack the clarity needed to bet on any lasting recovery.