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DETROIT — The U.S. government’s highway safety agency wants detailed information on how Tesla’s Autopilot system detects and responds to emergency vehicles parked on highways.

More than two years after touting plans to turn Tesla Inc. vehicles into robotaxis that have yet to materialize, Elon Musk held another highly technical event about autonomous driving development.

DETROIT — The U.S. government has opened a formal investigation into Tesla’s Autopilot partially automated driving system after a series of collisions with parked emergency vehicles.

Local authorities have declared the fire at one of Tesla Inc.’s biggest utility-scale batteries in Australia under control after the blaze initially erupted July 30.

Investors rushed back into Tesla Inc. shares on March 9, putting a screeching halt to a five-day slump, and pushing the stock to its biggest gain in more than a year.

Tesla Inc. on Jan. 27 is widely expected to report its sixth consecutive quarterly profit — and potentially its first $1 billion quarter. That follows a remarkable year when Tesla’s stock split and skyrocketed, the company joined the S&P 500 Index and it sold almost half a million cars.

Wall Street’s optimistic view on Tesla Inc. further solidified Aug. 26 after a Jefferies analyst more than doubled his price target on the stock, saying the company will continue to broaden its competitive edge in multiple dimensions, including battery capacity and industrial efficiency.

Tesla Inc. is headed for its seventh straight session of gains after Credit Suisse upgraded the electric-car company whose stock has been on a tear since its first-quarter delivery report.

Shares of Tesla rose about 1.5% in trading the morning of Feb. 13 after the electric vehicle and solar panel maker said it would sell over $2 billion worth of additional shares.

Tesla Inc. delivered a second straight quarter of blowout earnings and speedy execution, extending an unprecedented surge for its heavily shorted stock.